My favorite subject!
If blisters are an issue, liners can be the solution. I’m super prone to blisters. My feet are baby ass soft regardless of my training schedule. I’m sold out on injiji toe sock liners. I like the very thinnest they make. I dump a 1/2 tablespoon of my favorite foot powder in them before putting them on. Over them I like either mid or heavy weight Darn Tough hiking socks. It takes some getting used to, but for me it has been magic.
As an alternative, I’ve had good luck with Wright lined socks. They are an outer sock with an integral liner sock. They’re pretty good for rucks under 15 miles. If you use Wright socks, I like using Foot Glide to lubricate between my toes so toe to toe contact doesn’t cause a blister.
Smart Wool is crap. They don’t last. REI house brand? Same thing. Darn Tough socks are the poop. In fact, I just spent $50 on two pair today.