nobaraproject.org Nobara is EXCELLENT. It took me weeks to tweak my last distro to get to the point that Nobara is out of the box, and GloriousEggroll sets it all up and keeps it updated for everyone.
As for dual booting, you should be able to follow any online guide (and the Nobara installer might even have an option for it). The only caveat is Nobara does NOT support secure boot, so you may have to disable that in your bios (you can google the benefits of secure boot, I find that for a stationary desktop in the hands of any reasonable user, it’s not necessary. Only reason I ever turn it on is to play Valorant on Windows 11 🙃)