Here Matt Hsu of Upright Health demonstrates a glute stretch that hits the spot! Most stretches I do irritate my glutes. This one can hit where I feel real tight without the irritation the next day. The stretch starts a little after the 2:30 mark.
YogaJP starts with a similar glute stretch to the one Matt shows, but this more well-known version irritates my glutes. However, after the glute stretch she goes into a piriformis stretch (about 1:45) that for some reason works for me. I don't know if it helps the hips or low back along with the piriformis, but this one feels good to me too!