What gauges do you actually look at?

I monitor oil pressure, oil temp, trans temp, water temp and volts. It’s all equally important to me. Having an electric water pump, fans and mad ignition, of you lose an alternator you won’t make it far.
I monitor the oil temp, not for over heating, but so I know when the oil is warm enough to start running the motor hard. I will never get on the motor hard with less than 150 degree oil temp and that’s on the cold side.