Haha, no worries mate. It happens--that's why even experienced elite lifters look at their form and also ask others...sometimes we're just too close to the problem to see it clearly. That has nothing to do with experience level. And no, those are the big ones for now. Others will become apparent as you work on these and get these ironed out.
Hip thrusters are good too for sure. Throw in an isometric squeeze for 2-3 seconds at the top as well. It makes the move harder to cheat on by allowing your butt to sag if you have to hold the spot. Horizontal leg press is better than nothing, but you'll have to work to make it as close to your deadlift as possible.
Alternative options are narrow stance high bar box squats using deadlift stance and safety squat bar squats both done without momentum in the bottom of the hole. Even paused front squats. I mentioned the leg press because it usually does not take as much of a nervous system toll on you as squats and is simpler, so if the issue is strength in the quads it can be easy to add in. However, I don't particularly care for the horizontal leg press much, but it will probably still work. Work on quads can still be done with squat variations I mentioned above.
RE glutes and lockout: I picked it up just by watching the way you pulled back at the top of your lockout. You have a habit of halfway whipping your torso back to lockout instead of driving your hips into the bar. Not near as bad as many I've seen but it always pays to get to work on a problem before it becomes a serious big problem. In your case it is probably just how you are thinking about the lockout rather than a big recruitment problem.
Ok. That's why quad work is suggested. They shouldn't be the biggest movers out of the bunch in my opinion because otherwise you get into the thought process of "squatting" rather than "pulling" or hinging, but they can help drive off the floor and add pounds to your PR. For a floor sticking point the remedy is usually pulling from a deficit and snatch grip deadlifts (or even snatch grip RDLs, which are brutal). Take a month or so and focus your 1 main deadlift variation from a small deficit, for reps of 5. Do each without a tap/go. Use snatch grip deads as an assistance exercises. Don't overhaul your program, just take time to get good at those while focusing accessory time on paused quad work and glutes.
If you don't have a back day I might suggest one--a lot of rows.