As someone who uses a 40s keyboard (no numbers row, kinda similar to the bottom middle keyboard in OP's pic): my wrist pain that I got from typing 4-6 hours a day was gone once I started using them, because they're compact and I don't have to move my hands/wrists at all. When I type with a full-sized keyboard, I have to move my wrist when I want to type numbers, for example. Now I can type for 8+ hours a day without worrying about pain.
Of course, keyboards are all personal preference! That's why I love the mech keyboard community, seeing all the different layouts and shapes people tailor to use for themselves.
So about gaming… A couple weeks ago I had a dream that I was gaming and my friend told me I was playing poorly because of my keyboard so then we got in a fight. I usually use a 65% for gaming but last week someone convinced me I could use the Vault 35 (green one on the bottom left) so I tried it last week. It went okay after I got everything mapped the way I wanted but then at one point I accidentally turned off my gaming layer and the friend who I got in a fight with in the dream started to get annoyed so I pretended my game was messing up. Then I came clean the next day and he said "fuck you".
Moral of the story is I'm going to continue gaming on the 35%.
Oh, the mechanical keyboard hobby has a rabbit hole for damn near every preference you've ever idly entertained for even a moment. There's an antire category of boards "Alice or Arisu" that does a similar split, though only a few have any slope along the left-to-right axis.
Then here on lemmy there's !ergomechkeyboards@lemmy.world which is a little corner of the ergo community. They are NOT fucking around with their typing devices.