u/Wifire7

I was in ultra dimension in ultra plant, and i was there for a few hours grinding pokemon to level up. I saw nosepass, probopass, dracozolt, jolteon, beldum, and voltorb almost exclusively. This was during the day, then after a few days, i started seeing alolan golem, vikavolt, electrode, metang, metagross and other stuff. Then i left ultra plant, came back, and i stopped seeing all of that, what is the deal?