I couldn't find recent summarized data for the (excellent) benchmarks provided via the sd-extension-system-info repo, so I went ahead and pulled/summarized it. Here is the median It/s for each GPU with more than 10 entries in the table (single GPU setups only).
Source: https://vladmandic.github.io/sd-extension-system-info/pages/benchmark.html
As far as I can tell based on the numbers (and me having both a 3060 and an M2 Mac) the base M2, thanks to the ML cores, sits between 1080 and 1080ti levels of performance.