- Edited
WetGeek Pisi is certainly one you'd enjoy taking a look at
FOLLOWUP
While in the KDE session, you can load the Budgie DE with this command: sudo pisi it budgie-desktop
. Then reboot, and Budgie will show up together with KDE Plasma as an option on the login screen.
Unfurtunately I wasn't able to actually try Budgie on Pisi, because every attempt to log on to a Budgie session failed. That's the first beta-like problem I've seen so far from this beta OS. Hopefully it'll be fixed before long. Maybe in time for Budgie 10.6.
EDIT: Unlike openSUSE and Gecko, Pisi DOES have Vivaldi available for installation. The pisi command is just sudo pisi it vivaldi-browser.