What gauges do you actually look at?

Volts is way over on the other side, next to fuel level and vacuum.

But again that's a reading I cant just pull over and fix. If my voltage regulator craps out its AAA time.
Not so my man; if the regulator craps out you just full field the alternator, and turn everything on. Then drive for say 20 minutes like this and then remove jumper for 40minutes with all accessories off, or if at night,until lights go dim, then repeat.
Now if the alternator goes down it is almost always because the brushes aren't connecting, usually too short. So carry a spare set, and swap them out in a few minutes.

But to answer your question, the only gauges I need are the Speedo and the gas gauge. Cuz the one time I got caught ignoring the speedO, that cost me a weeks wages.
About the only time I ever look at the temp gauge is when smoke starts pouring out from under the hood,lol.
Oil Pressure gauge? Yeah the factory gauge is saying I got some, so Giddyup. That's the last time I'll look at it on this trip.
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I live in a rural area, about 20 minutes from the closest town, where I have been working since 1984; so a lot of people know me.
My car has a unique paint job and a lotta people know who drives it. So when I used to break down,(usually ignition), by the time the hood goes up, you can almost bet that someone is pulling over to help. I've been fixing their stuff, and their kids stuff, and maybe even their grandkids stuff for something like 35 years. Sometimes they just wanna watch or we visit while I work. I'm trying to remember if I ever called a tow truck, but I'm drawing a blank.