This has been my experience as well. I’m actually a little disappointed when a car maker goes to the trouble of putting in a fully digital instrument cluster and then just use it to display… two dials, with no other options. Ideally they’d all include at least 1 more conventional-looking option and then some fancier ones.
I was actually going to recommend taking a look at Mazda vehicles, as they’re quite upscale, reliable, economical, fun to drive, and still have physical instrument clusters (sadly though, only the Miata offers a manual on the higher trims, so on any model but that you’re relegated to losing features to gain the stick shift).
I did find this thread on the GR86 forums (which, as you’re likely aware, is the BRZ’s platform-mate) and saw this place mentioned (no affiliation) with respect to modifying the instrument cluster to open up some customization options, but I didn’t read too far to determine what extent of customization is possible.
As another commenter mentioned, there’s also the WRX, and if you’re not absolutely set on RWD, I’ll again mention the Civic Si, Type R, and also the Integra (really just a dressier Civic) are also options which display speed conventionally, have lots of cargo space, engaging driving dynamics, and a manual option (albeit sometimes finicky - if you haven’t used a Honda manual before, definitely get some seat time behind one before committing).
Personally, I like digital speedometers and I think you might get used to it, but in case you’re afraid you won’t, there are usually different display options. Audi, for example, allows you to customize their “Digital Cockpit” from more conventional looking gauges to a “hockey stick” style. Honda, at least as far as the newest Civics are concerned, uses a fully digital display but with conventional-looking dials (with the exception of the Type R, which in Sport+ mode gets a unique display).
I think your best bet might be to narrow down your search to particular cars you’re interested in and either ask here, in some forums specific to that make and model, or ask the salesperson - any of them should be able to help you find out if and how to customize the dashboard to your liking.
Edit: what cars have you looked at so far?
Edit #2: it also sounds like you may be running afoul of the cars’ safety features. Many cars, including mine, are set from the factory to flash, blink, or otherwise highlight the speed when you’ve gone over the limit, even if only by 1 mph / kmh, which I did find distracting. I adjusted the buffer to +10 and it’s much less annoying.
I know this post is a bit older at this point, but do you have any custom fonts installed? I could reliably reproduce my browser fingerprint as you described, even between Librewolf and Firefox with different configurations (including JavaScript disabled in Librewolf). A visit on one browser would increment the counter, and vice-versa.
I had forgotten that, quite some time ago, I’d installed a font not packaged with my OS - I deleted it, made sure to clear out my site data, changed IPs, and finally got a shiny new fingerprint.
Cross-referencing with EFF’s coveryourtracks site, I also noticed that one metric that almost never changes for me is my audiocontext fingerprint, although I can thwart that by disabling JavaScript, but maybe that’s contributing as well?