I managed to get XBAR overclocking on linux for my RTX 5060 8GB. This score is still lower than the best 4060 Ti score on https://gravitymark.tellusim.com/leaderboard/ but at least it beats a 2080 Ti (whatever that's worth)!
Core: +400
Mem: +3000
XBAR: +275 (no voltage offset)
If you want to learn how I did it take a look at: https://kovasky.me/blogs/blackwell_xbar_overclocking/