if you've done more of a power lifter approach why not try a begginner bodybuilding routine for a bit and make modifications every few months or whenever you feel like you need too.
this could be as simple as a 4 day body part split, chesttri, backbi, shoulders, legs
then adding a separate arm day in a few months after leg day
then a few months after that maybe you realize your chest is lagging so you hit your chest twice a week or whatever body part your lagging in
or maybe you start hitting everything twice a week with a push/pull/legs routine. its all a progression where you have to figure out what you need.
my favorite routine the one im doing now is: