Sony A7C or A7III, both 24mp fullframe, both with 5-stop IBIS. Lots of good ones new or used within your price range

Or go to $2400 USD and get the latest new fullframe 33mp Sony A7IV with 5.5 stops IBIS, just a super versatile camera with many new performance features. You might find it for less used.
https://www.sony-asia.com/electronics/interchangeable-lens-cameras/ilce-7m4

Sony 24-105mm f4 G OSS, $1000 USD new , even less used.

A great choice IMHO.

FYI, since moving over from pro Nikon and Canon which I used for over 40 years (both brands), I have owned Sony Mirrorless A6500 (APS-C); and Sony Mirrorless fullframe A7RII, A7RIII, A7III, A9, and currently own Sony A1, A7RIV, A7SIII.

Of my 13 E-mount lenses I have covering 10mm to 600mm from Sony, Sigma and Tamron, my Sony 24-105mm f4 G OSS lens is my most used lens for my professional and personal use around the world.

Here one shot, 24mp Sony A9, and Sony 24-105mm f4 G OSS lens. This shot was chosen as a Worldwide Photo of the Week by Sony Alpha Photographers in 2020. Environmental Scientist Brook H., in a slot canyon near Upper Antelope Canyon, Navajo Lands, Page, Arizona, USA. 24mm, ISO 400, f4, 1/30 second, handheld, all natural sunlight in the canyon.

Another award-winning Sony 24-105mm f4 G OSS shot, 24mp Sony A9. A local swimmer dives off a pier into the Caribbean Sea on the island of Sint Maarten/St. Martin. 24mm, ISO 400, f5.6, 1/2000 sec.

Cheers and best to you.

I could care less for this Sony stuff - But I certainly will give KEH some props (Again!).... Coupla' weeks ago I ordered a lens (30mm Sigma Art lens) from the UG (ugly) section for my Olympus/Lumix m43 bodies. I expected it to be kinda' beat up but functional. Noap! When I received the lens, it looked as if it had never been used... only missing front and rear caps. Absolutely functions properly and looks almost new. Perfect glass and body.

This has been a common theme from KEH, in my opinion, in past years of ordering from them. No hesitation!

The Sony models I listed in my previous comment the 24mp A7C, 24mp A7III, and 33mp A7IV all have great video capabilities and great IBIS.

One Very important fact: The Sony E-mount is the most widely produced and used mirrorless lens mount in the world. There are nearly 200 native E-mount lenses from Sony, Sigma, Tamron, Samyang/Rokinon, Zeiss, Tokina, Viltrox, Meike ,Yongnuo, and others. And these excellent E-mount lenses come in all price ranges to fit any budget. I personally own native E-mount lenses from Sony, Sigma, Tamron.

Neither Canon or Nikon even come close to this for mirrorless lens choices. And Canon has forbidden third=party lens makers from making any RF lenses, so you would be locked into the limited RF line of lenses, with just a few cheap kit lenses, or a few very expensive top quality RF lenses.

Nikon , to its credit, is now opening up its Z-mount to Tamron lenses, some badged as Nikon Z-lens like the Z-mount 28-75mm f2.8, and Z-mount 17-28mm f2.8 lenses, and the new Tamron badged Z-mount 70-300mm lens. But still just a few are available now .

Here are the E-mount lenses already available, more additional new ones are being released all the time in all price ranges to fit any budget:

From Sony:
https://en.wikipedia.org/wiki/List_of_Sony_E-mount_lenses

From Third-party lens makers:
https://en.wikipedia.org/wiki/List_of_third-party_Sony_E-mount_lenses

Canon's move to ban third-party lenses has already led to many of those considering R -cameras to move to Sony or Nikon. I know this because I administrate and moderate several worldwide photography groups on Facebook and folks have commented around the world on what a dumb move it is by Canon and why they are now NOT going to go to Canon R cameras, and Canon's competitors are benefitting.

Cheers and best to you.

Here my 24mp Sony A7III with the very affordable E-mount Sigma Art 70mm f2.8 Macro DG lens. A dragonfly in Manistee National Forest, Michigan, USA. 70mm, ISO 6400, f22, 1/1000 second, handheld, all natural sunlight.

Sony A7C or A7III, both 24mp fullframe, both with 5-stop IBIS. Lots of good ones new or used within your price range

Or go to $2400 USD and get the latest new fullframe 33mp Sony A7IV with 5.5 stops IBIS, just a super versatile camera with many new performance features. You might find it for less used.
https://www.sony-asia.com/electronics/interchangeable-lens-cameras/ilce-7m4

Sony 24-105mm f4 G OSS, $1000 USD new , even less used.

A great choice IMHO.

FYI, since moving over from pro Nikon and Canon which I used for over 40 years (both brands), I have owned Sony Mirrorless A6500 (APS-C); and Sony Mirrorless fullframe A7RII, A7RIII, A7III, A9, and currently own Sony A1, A7RIV, A7SIII.

Of my 13 E-mount lenses I have covering 10mm to 600mm from Sony, Sigma and Tamron, my Sony 24-105mm f4 G OSS lens is my most used lens for my professional and personal use around the world.

Here one shot, 24mp Sony A9, and Sony 24-105mm f4 G OSS lens. This shot was chosen as a Worldwide Photo of the Week by Sony Alpha Photographers in 2020. Environmental Scientist Brook H., in a slot canyon near Upper Antelope Canyon, Navajo Lands, Page, Arizona, USA. 24mm, ISO 400, f4, 1/30 second, handheld, all natural sunlight in the canyon.

Another award-winning Sony 24-105mm f4 G OSS shot, 24mp Sony A9. A local swimmer dives off a pier into the Caribbean Sea on the island of Sint Maarten/St. Martin. 24mm, ISO 400, f5.6, 1/2000 sec.

Cheers and best to you.

Got a Fall/Winter 2022 flyer in the mail from KEH. Started flipping through the pages, got GAS pains, but had a pack of TUMs in my pocket. What got my attention was the depth of mirrorless brands and equipment levels in their inventory. So I started wondering if I did go mirrorless, which brand, which camera? Would not know where to start. Too much to choose from. Time to game this situation.

Say I have a price point of $1800-$2200 for the body. Seems the UHH consensus is that it must have IBIS. Let's say we pair it with a 24-105 lens or equivalent, say $1000, give or take. Prefer full frame resolution. Never had a problem with pre-owned equipment. I shoot mostly outdoors, buildings, nature, often on open waters. Currently use all Canon equipment but not a limiting factor.

Now, which brand, which model?

Sony A7C or A7III, both 24mp fullframe, both with 5-stop IBIS. Lots of good ones new or used within your price range

Or go to $2400 USD and get the latest new fullframe 33mp Sony A7IV with 5.5 stops IBIS, just a super versatile camera with many new performance features. You might find it for less used.
https://www.sony-asia.com/electronics/interchangeable-lens-cameras/ilce-7m4

Sony 24-105mm f4 G OSS, $1000 USD new , even less used.

A great choice IMHO.

FYI, since moving over from pro Nikon and Canon which I used for over 40 years (both brands), I have owned Sony Mirrorless A6500 (APS-C); and Sony Mirrorless fullframe A7RII, A7RIII, A7III, A9, and currently own Sony A1, A7RIV, A7SIII.

Of my 13 E-mount lenses I have covering 10mm to 600mm from Sony, Sigma and Tamron, my Sony 24-105mm f4 G OSS lens is my most used lens for my professional and personal use around the world.

Here one shot, 24mp Sony A9, and Sony 24-105mm f4 G OSS lens. This shot was chosen as a Worldwide Photo of the Week by Sony Alpha Photographers in 2020. Environmental Scientist Brook H., in a slot canyon near Upper Antelope Canyon, Navajo Lands, Page, Arizona, USA. 24mm, ISO 400, f4, 1/30 second, handheld, all natural sunlight in the canyon.

Another award-winning Sony 24-105mm f4 G OSS shot, 24mp Sony A9. A local swimmer dives off a pier into the Caribbean Sea on the island of Sint Maarten/St. Martin. 24mm, ISO 400, f5.6, 1/2000 sec.

Cheers and best to you.