crow

IronFox from here:

https://github.com/ironfox-oss/IronFox

desktop should "leak" more or less the same data, I think

Weird, my Fennec must've had additional configurations I forgot about since it didn't give out that info. I uninstalled it for IronFox so I can't check it! I mentioned LibreWolf but that's on desktop, so no gyro info there

I have no answer to your question, but if you're looking for alternatives, hardened Firefox forks such as LibreWolf, Fennec, IronFox etc all have varying degrees of anti-fingerprinting features. I know for sure that Fennec withholds battery and gyro data, but gives timezone data, while IronFox can spoof the latter with a toggle and reports a spoofed screen size

edited

Thanks for sharing, I was already using a decent anti-fingerprinting browser (Fennec) but the fact that it gave away my timezone made me research a bit more and I'm now on IronFox, which has a toggle to spoof it, and reports a fake screen resolution. Great! I'm now unique on coveryourtracks though

Understood. I mentioned TW3 because I found it to be very anal about Proton versions, but I've never had any problems that could be attributed to nVidia with any games I've played. I ran the official, close-source drivers

I've had no issues with nVidia GPU and TW3, running it with protonGE 9.26. Try that first if you haven't already