Some varieties are ‘runners’ which spread via underground rhizomes. Some varieties are ‘clumpers’ which also spread that way but much much slower. I would be wary of even planting a clumping type, because if you ever change your mind and want to remove it, it can still be challenging.
People have great luck growing some smaller clumping varieties in containers which is probably the safest method. I’m actually trying to do that too just to jazz up an ugly concrete spot