I finally found a possible ID for my seed grown cacti. It may or may not be Echinocereus pacificus. A fast growing, hardy cactus with medium long spines and sometimes in hard sunlight the top spines will turn pink or brown. If you get poked, the spines will lodge themselves deep into your skin and break off. And yes, it’s happened more times than I can count, especially during a repot.
I looked up the flowers and now I really hope this ID is correct. If it is, they should be able to flower already!