Does Dawn of Men coming to play anywhere?

No it is not listed maybe try keyboard and mouse

It's not down to Microsoft ot will be for the developer to implement that. I'd message them directly as the only reason to do it is if there is an apparent demand for it.

You might contact the developer Madruga Works through the official Dawn of Man website to request this to be added to the Play Anywhere group of games, or to request K/M support for the console version. If you would
prefer a PC version of the game, it is currently on Steam.

Here is a current list of Xbox Play Anywhere titles.

https://www.xbox.com/en-US/games/xbox-play-anywhere

Exteranl Link: Dawn of Man Official Webiste

http://madrugaworks.com/dawnofman/

yeah, if it supports, that would works too.

Per the game's entry in the Xbox Store, it is not listed as Xbox Play Anywhere. You may want to reach out to the game's developer to see if the Xbox
One version supports keyboard/mouse usage.