Then it's not even a year old. The things that see the most movements performance wise are focused on AMD and NVidia. I'm not convinced there will be a huge difference between what he measured then and what you would measure today. If you are comparing that card with a newer one, the latter will probably get better performance. If the difference in performance is worth the difference in price, only you can decide

There is https://www.phoronix.com/review/intel-battlemage-linux-may2025/2 but that is not cross-referenced to the other one

My point is, the last time Phoronix did a review on b580, 9600 was not even on the graph yet. When it comes to gaming hardware on Linux, I don't know of any better place than Phoronix. He does the tests really using a Linux box, really running games (or computing) and sometimes even runs tests again when there is some big release of Mesa etc.
But when trying to decide which generation to buy you most probably have to glue together how the thing you are eyeing compares to the other thing, by comparing both to another one that is present in both comparisons

I haven't been paying attention to GPU market lately, are you actually asking about 9060?

In such case, it seems this is the review you might be looking for