Potentialy dumb question here, is there any benefit to using btrfs on a non system disk? I'm fairly ignorant on file systems, asfaik btrfs largest benefit is snapshotting, not sure of anyothers.
I usually just stick to the standard file system to any OS.
So for Linux that would be ext4.
For external drives i use either FAT32 (the ol' reliable) or exFAT (the fastest for dealing with large files when you set the max allocation unit size AKA 32MB).
RHEL is going hard on XFS, they've even completely removed BTRFS support from their kernel - they don't have any in-house development competency in it after all. It's somewhat understandable in that regard, since otherwise they wouldn't necessarily be able to offer filesystem-level support to their paying customers.
Though it is a little bit amusing, seeing as Fedora - the RHEL upstream - uses BTRFS as their default filesystem.
If there is one thing one can learn from the Linux community at large is how to agree on absolutely nothing and still be friends (mostly, that is. As long as Linus isn't involved. Then the gloves are off. Who dared to put rust in the kernel?!)
openSUSE uses BTRFS as the default filesystem for / and if you have any additional disks (for example a separate home) it uses XFS by default. Unless that's changed since the last time I installed.
When I worked through some AutoYaST setups for Leap 15.5 the default disk setup did BTRFS across the line, though that could definitely differ from doing the install interactively.