The best deadlifts for lower-body strength differ depending on who you talk to. I prefer Romanian deadlifts to standard deadlifts, for example, but I know plenty of people who prefer single-leg variations, especially as this helps you train one side of your body at a time.
A deadlift you might not have heard of is the gladiator deadlift. It appears to be trending on social media right now, but if this move isn't already in your strength program, should it be?