yeah, most plecos should be ok since they'll usually stay out of everyone's way. keep in mind that they'll add quite a bit to your bioload as they poop a lot. if space is a concern, you might want to take a look at a bristlenose pleco as they stay a lot smaller than regular plecos and still do a good job at keeping the tank clear of algae.
if they are similar sizes it should usually be fine if you introduce them to the tank at the same time.
if they are similar sizes it should usually be fine if you introduce them to the tank at the same time.
