Have you tried the 2019 16” MacBook Pro keyboard?
The only gripe is, and this might be true of all Mac backlit keyboards. Is that I can see light coming from under the keys when viewing it at a low angle such as when I've got my feet up and it's on my lap. Not just through the letters, but little slivers of light under each one.
My pet peeve too. I hate that, as it doesn't happen on Microsoft Surfaces.
If it can't be fixed due to the different travel distance, give me instead a RGB led per key and I will be coding funny patterns to work around the issue (ex: red keyboard backlight at night, with a green for the important keys like enter, and blinking F keys if I got activity on a terminal)
The machine you mention is my work machine, but it has been docked and I haven't really broken in the keyboard.
The previous work machine which I typed in probably 20k words a day was a butterfly keyboard mac. I hate that machine with a passion, I want to buy it back from my employer and bisect it with a plasma torch.