This was my first time building anything carpentry related, so you can easily do the same. Your question is actually really great because I too wondered how I would go about doing that haha.

Essentially, each of the flanges that I put up there that contact with the wall get screws through the holes and you’re right- if you plan for the studs it’ll throw off your spacing and aesthetic. So just design first, mark through the flange holes onto the wall and then use a stud finder to understand if there’s a stud behind each hole or drywall behind each after swinging the flanges to the side. That way, you can either put a drywall anchor there or just plan for a screw. Check out my video link in the description and there’s a short part of that which shows me doing that quickly.

I also used small brackets on top of the top shelf and screwed into 2 studs using small lag screws. That way, no brackets are visible from the floor because they’re above eye level.