I have three systems for 6 bikes. Half my bikes are fix gears, I will only ride traditional slotted cleats with those. (The cleats where you fall over if you forget to loosen the buckles. And just about the only system where your foot stays on the pedal if you pull a cleat out at 200+ RPM going downhill.) My two good geared bikes get LOOK Delta compatibles. The black no-float cleats. (Float is a knee killer for me.) My townie/occasional not serious gravel/farmers market bike gets double-sided SPDs with the cleats set to max toe-in and near max release force to get as close to no-float as possible.

This does make for a lot of shoes. And sometimes needing to go back inside to get the right shoes for the bike I am about to ride!