I moved myself out of the RHEL[-adjacent] ecosystem about the time IBM announced they were acquiring Red Hat
Which is a little sad - Red Hat 3 was the first Linux distro I ever tried back in the 90s (came on a CD in the back of Red Hat Linux Unleashed, published by SAMS)
I liked IBM's hardware 20 years ago
I liked AIX up until about 12-15 years ago (still like a couple things AIX will do on POWER gear that no one else seems to be doing elsewhere (but I may be underinformed on the state of AIX vs various alternatives))
But I have not liked IBM as a company for at least a dozen years - they've become even more sales- and management-heavy than they used to be, and, imo, are not doing anything especially "interesting" any more - they're floating on their reputation (which they don't seem to be doing much to even keep steady, let alone improve)
I'm not especially thrilled with Canonical and Ubuntu, but it's a lot better (imo) than its upstream Debian (let the flames flow - it's my opinion, not yours!)
More recently, I've been getting back into OpenSUSE and SLES - loving how very very little has changed since I was using it as my daily driver on servers (and even as a desktop) 15-20 years ago, but also how much better it has gotten (at least on the server side) in the intervening decade and a half since I was last on it routinely
OpenSUSE is very "European" in feel (and no - I don't know how else better to explain that - just like SAP "feels German", SUSE "feels" European (more than German, though it does feel a little German, too) to me)
I still run across some RHEL and Fedora with some clients I work with - but they're not as prevalent as they once were (in my exposure, at least)