In order of what I feel is the best way to go for building a base on compound movements -
Squat (barbell, front squats or plain 'ol back squats, always going to parallel or below), deadlift (regular or Romanian), barbell or dumbbel row, pull-ups/chin-ups, overhead barbell or dumbbell press, and barbell or dumbbell bench press. That range of 6 lifts covers all the major bases (I listed two options for upper back since it can be trained in two planes of movement), each lift a good base for a body part to focus your training around, other movements will be supplementary or complementary to those main lifts.
A good place to start, no filler, all good, so consider adding some of those in your training regimen!
Yep, I am 42 years old and the core of my workout right now is back squat, Romanian deadlift, chin ups, pull downs and rows, overhead dumbbell press, barbell and dumbbell bench press and weighted dips. I will throw in some other lifts from time to time but I find I need to reach a certain size or bodyfat %, before I start in on the isolation moves. I am 6'3", 216 lbs right now so I have a little way to go before I start hitting the iso movements.
I never understand when I see these young guys (not all) in the gym who say they want to get huge, but they spend half their workouts on curls, tricep exercises, flys, lateral raises and smith machine work. That drives me nuts as well. I see people doing squats on the smith machines thinking it is much easier on the lower back and knees and essentially better overall than barbell squats. I always find it funny when someone comes up next to me on the smith machine when I am doing barbell squats and they are so impressed with themselves doing more weight than me, not realizing the leverage the smith machine provides, of course you can do more weight.