“Low maintenance friendships”, aka friendships. Can’t remember who I heard it from, but someone put it in a way that resonated well with me. If it needs constant work, it’s not a friendship. If you’re friends, you can meet after not being in touch for five or ten years and continue exactly where you left off.

Edit: “constant” being the key word. It takes a lot of work achieve that level of friendship, but it may also be the only type worth having