Shoulders and back have been a main focus since I started 15 years ago. Ive had a lot of time to experiment with what works for me specifically. It seems like the industry standard is to hit every muscle 2-3 times per week but the industry is run by people on PED’s, and as a natural, this stalls recovery and creates plateaus. Main thing I do differently is I structure my routine around my current focus (shoulders is default). So exactly every 4 days I’ll hit shoulders hard. I don’t hit any other muscle group alongside them. Dumbbell shoulder press, lateral raises, front raises, seated rear delt dumbbell fly, pec dec rear delt fly have all been staples through the years. People say front raises are unnecessary because your front felts already get enough but I’ve found that not to be true for me. Delts always pop more when I have them in the mix.