OpenSuse Tumbleweed, Arch and Arch-based distros like EndeavorOS, maybe Debian Sid (it's been a while since I've used it, don't know how up-to-date the packages actually are), maybe Fedora Rawhide. There's also Manjaro, but I can't really recommend it when there are better options. Then there are some other rolling release distributions that I can't speak for, some of them new and some of them old like Gentoo.

I've used Ubuntu and Debian stable and testing for decades, but have migrated over to rolling releases for desktop use because of better hardware support.