Redhat employs most of the kernel, systemd and gnome developers. So Fedora is kind of a stable bleeding edge distribution - you can go completely bleeding edge (arch) or very stable (rhel / debian) .

Ubuntu is a fairly opinionated distribution built by canonical - it does not necessarily be at the bleeding edge for anything.

I gave just recently switched over from Ubuntu to fedora and have had a much better experience - especially on my latest Skylake Xps laptops with nvme ssd.