the calligra suite works fine too. open office is basically dead and replaced by libreoffice. I don't know if any development is still happening. I can't name another office suite Wayland or otherwise though

xwayland does just work though. I don't even know how to explicitly run something under it

explicit flags are more of a problem, but they're going away slowly, and for the most part people can just let things run under xwayland instead of dealing with flags. there are some apps that just won't work, but for the most part it's not a widespread issue in my experience