Squats are king for Lower Body Strength. Front Squats, Back Squats, Box Squats, Manta-Ray Squats, Zercher Squats, Squats with various specialty bars if you have access to them.
If you want more legs out of your Deadlifting, then you can do Sumo Deads, Sumo or Conventional Deads standing on a platform, or Sumo Deads off Blocks or Safety Pins.
But if you're looking for something to do AFTER Squatting and Deadlifting, then it's really going to depend on what your gym has.
Good Leg Extension, Machine Hack Squat, and Leg Press Machines are pretty hard to come by. Usually the more basic, the better
Back Extensions and Glute Ham Raises are preferable to Leg Curls, but if all you ahve is Leg Curls, then that's all you have.
Don't forget about Good-Mornings and Romaian Deadlifts.
There are other unilateral leg movements besides lunges, but none of them are really as good as the lunge.
Just because you have a lot of choices doesn't mean you need to use all of them.