When I was riding with prescriptions, I just used 80-85% transmission yellow lenses. Cheap(er), good contrast, bright light was just something you adjusted to.
I have several pairs of sunglasses now. Blue or green for driving (these are fashion glasses, not being used for "performance", whatever that would mean for driving a car normally).
I still use yellow lenses (these are commonly available as shooting glasses) for evening/night on a bike.
During the day, I've settled on cinnamon/orange lenses, again 80-85% transmission. I find that I'm not staring at the sun, so more than that really isn't necessary. I never had particularly light sensitive eyes before vision correction, and I don't particularly have sensitive eyes after. Dry as fuck, but not light sensitive. Very few of our MTB parks are open enough that you get whacked with lots of sun in the eyes.
If it's an unusually sunny day that I'm riding on the road 99% of the time, I'll use photochromic grey lenses.