Comment by LichenStone

I would recommend checking out Chyrosran22's keyboard reviews for a more fair comparison across different boards. He's reviewed just about every switch type under the sun at this point - https://www.youtube.com/@Chyrosran22/videos

At the end of every review he does a typing test, and for the last few years at least I think the mic has been in more or less the same kind of position and they've been recorded in the same room. You still have to apply a pinch of salt because I don't know if there's been significant differences in audio level normalisation/compression/EQ, but it would give you a more representative idea of what to expect.