Not the best to teach acceleration through the lift, but great for technique:
Lift the bar off the floor an inch or 2, pause for 3-5 seconds, then finish the lift. Will teach you tightness on the bottom. Don’t do it with max weights tho, take your time getting stronger with that lift.
The other, similar to the first one is what some may call Sheiko Deadlifts: pull off the floor to just below your knee. You can do this as a standalone exercise in the 3-5 rep range (at least for Deadlifts and variations that’s my preference, except maybe RDLs), or you can do it like, 1 or 2 of these below the knee reps then a full pull, that’s 1 rep, do 2-5 of these, paying full attention to form!
Remember, these are lifts to help your technique, and they have you spend a significant amount of time in the bottom part of the lift. Do them right and they serve you well, do them wrong and they can fuck your back up.