gi1242

for instance alpine has a small footprint. its designed for containers ... but I think it has a DE as well

I used seafile in the past. but I abandoned it for syncing. might help your use case ...

I use syncthing for this purpose all the time. I seemlessly move from my work PC, home PC or laptop. I sync my data directories and most of my config settings. some are different per system (monitors, etc). 10/10 highly recommend

honestly they are all pretty good at this point. start with the default ur distro supports. if that isn't to your taste try kde/plasma, gnome or lxde

s/chromium/Firefox/g