that’s not a bad goal to have. Plenty of people would kill to have a physique like that. I can give advice based on that.
First: Don’t use pictures like the ones in your first post to gauge where you are at. Don’t use flattering angles or lighting. The more honest you are with yourself, the better off you’ll be. For my progress pictures, I use the same mirror, same light, same neutral poses every single time. Changing angles, looking for the best lighting, etc is just going to be misleading. I can’t actually gauge your proportions well from the first 2 pictures. The last pic you posted in just the pants is the closest thing you have to appropriate, but you should at least put one hand down. I’ll leave a picture on here of what I mean at the end of this post.
Second: Zyzz didn’t have 20" arms. Noooooo way in hell, unless he was like 6’4.
Third: A lot is really going to depend on genetics. How your muscles grow/shape, your bone structure, all of that is out of your control.
So yea. post some better pictures and we can go from there in terms of addressing specific needs. Right now, the answer is probably just ‘work on everything’. You want to build up the majority of the muscle you plan to gain to start with, and THEN you start working on details/weak points that may arise. And at the end of all that, you cut to the bodyweight you intend to maintain longterm.
So something like this: you can see pretty much everything straight on, no weird angles, reasonable lighting.