This hybrid looks like humifusa and cespitosa, but the flower colour is something different. Flower colour gets a bit darker as they age. Hard to tell the parents, but one of them was humifusa or cespitosa for sure.
This hybrid contains probably polyacantha and fragilis and perhaps more. Very nice flowers, nice spination as well.
This hybrid contains probably pinkavea, possibly fragilis or polyacantha or perhaps macrorhiza. Very nice flowers, not very spiny. Pads appear as a bit blue-green.
Small plant with no spines, only glochids. Stays low, spreads and flowers very willingly. Flower colour yellow, but fades to light pink. Unknown parentage, but certainly not pinkavea.