Oppps... really sorry for that. I am leaving this conversation. My fault should know enough by now to check the thread. No offence ment.

That's actually not what I said, It's just what you read into it. I told you, you win. Enjoy your day.

the picture you are showing me is in a color profile not a B&W profile. I give up. You are a photography genius. I quit, I don't know what I was thinking.

If you read what I wrote, you would have seen that I actually talked about digital filters available on most cameras when shooting B&W,,, and you can apply them when shooting in B&W in camera. They are Yellow, Orange, Red and Green. Also, you actually can use physical filters which are B&W filters, again, Yellow Orange, Red, Green.
Like you can also, use and IR filter it you want to shoot infer red ... YES if you put a filter in front of you color photo's it will really mess it up. If you have a new found photo science and it works for you, just use it and be happy.
I do have degree in photo science and worked 38 years for Eastman Kodak with many years in the creation of digital photography, and sensor technology. I've been doing photography for 60 years. You have seemed to have found a new enlightenment, which seems to be far advanced from any that I could possibly have. So, please except my profound apology and start teaching everyone your new found science. Have a great day.

Shooting monochrome with a digital camera.
Muddy pictures is mostly do to lack of dynamic range in the scene. Your cameras metering system is driving your exposure to middle grey (18% grey).
When you shoot in color, The colors give you a distinguishing visual difference in items in your picture (flowers, red, yellow, white, violet, etc.). Shoot monochrome (all pushing to middle grey) we start to look muddy. Add a cloudless sky (prolly pure mud)
So if you want to shoot monochrome, setting up your presets are important. This is really kind of an easy task with mirrorless systems because you can see the results of you presets. So things like contrast, or bending the highlight and shadow curves can help get what you want. Also, introducing digital filters typically use for monochrome in the film days (Yellow, Orange, Red, Green). All those filters were what kept you out of muddy.
Black and White film emulsions were formulated with different D log E curves and a different Gamma, and ISO / sensitivity, is what allowed you to make your film preference choice (plus x, tri x, Plus x, and so many others).
So to shoot digital monochrome:
create an appropriate profile for the scene
shoot RAW or RAW plus jpeg.
compose in monochrome not color (so you see the scene as you want it to be)
You can convert an image to monochrome in post but note, all of the above items still apply.
The results you get will be based on the same way you get to play in Carnegie Hall (practice, practice, practice).

I have the Godox x2TN. It works ok. I bought it because of previous positive results with Godox triggers on my Olympus system. I was a little disappointed In this Nikon Version because it did not have the same control to sync (via the 2nd position on the side switch to support hi speed sync. I think Nikon made this proprietary so you have to use their speed light. However, the trigger works fine for normal sync. That said, setup is a bit annoying mostly because of the method they choose to define the (to many channels the unit supports) with a line of buttons for each channel (A-E). I also found the setup menu confusing but figured it out. You may want to consider the Godox X1TN, especially it you don need 5 channels and you are not planning on placing external flash units all along the Apian Way to photograph the evacuation of Rome. The X1 is much simpler and less expensive and works fine. Hope this helps. Enjoy your day :) Opps, I bought it to work on my Nikon Z5.

Thanks for the nice comments. I have done this before as a composite in software. These were all done in camera. I was pleased with the results using multiple exposures with my new to me Nikon Z5. I shot Nikon for years and left about 6 years ago. I was pretty much fed up with the bulk, weight and amount of gear i had to carry for a shoot and went to a mirrorless system. Have been curious about Nikon Z system and decided to give it a go. If you see Nikon tell him, I think I am back :) thanx again for taking some time viewing and commenting.

my perspective.

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Good Job. Great shots. Thanks for sharing.

WOW... excellent work.

good work

Eye Catching. Great photo. thanx

Great work. Thanks for sharing.

awesome, thanx for sharing.