You can use Office365 in the browser and it will work fine. If you need a desktop app that can handle Office formats use OnlyOffice. It’s free and works great with office.
Development stuff is equally available on all distros so you aren’t limited by that at all.
Steam should work on all distros as well, however only the rolling releases will always have the latest libraries and drivers. LTS releases like Ubuntu and Mint won’t update those frequently but it doesn’t mean Steam won’t work necessarily.
I use Mint because it has a lighter RAM requirement than gnome Ubuntu.
The best, most stable rolling release is opensuse Tumbleweed. Everything is tested before release, it’s always on the latest and greatest, and it has system rollback built in, in the event that you need to roll back an update. But this never really happens on opensuse, it’s very reliable.
If you want a rolling release I wouldn’t look any further. Arch is a pain and breaks frequently. Fedora releases a new version every 6 months so it may be a possible option, but opensuse is better. Also ethically opensuse is better because Fedora is Red hat and they hate the Linux community. I’d stay well away from Fedora and Red Hat.
Currently Ubuntu 23.04 is acting as a rolling release so try it out with your desktop of choice and see if it works for you. They should eventually revert to every 6 months as from version 24