Mint works well on my Thinkpads

Debian

All my devices use Syncthing via Tailscale to get my data to my server.

From there, my server backs up nightly to rsync.net via BorgBackup.

I then have Zabbix monitoring my backups to make sure a daily is always uploaded.

Brother works incredibly well. Plug and play

Linux Mint is what I use and have no issues with my 3070.

Chimera OS might be something you can look into however I have not used it

Pop OS is also great for nvidia support