I’ve found that what works best for me is a pull/push/leg split with a rest day between pull and push day and after leg day. I like to do a shitload of heavy deadlifts on pull day, along with pullups and various rows and then do a lot of squats on leg day along with sumo deadlifts.
I usually go a little lighter on the sumos than on the regular deadlifts and sometimes I do romanian deadlifts instead.
But with this split, I get more than one leg workout per split essentially because I go heavy on deadlifts on pull day. Deadlifts work pretty much everything but the chest, tris and front delts so it’s a good one to do before press day.
I’ve always neglected my legs in the past and I’ve put the same emphasis on my back as on my chest at best, so this split lets me put more focus on those areas without overdoing it.