I either trained full body twice a week, or upper/lower four times a week.
I either did squats and TBDL once a week, or squats twice and then loads of stuff like RDL's, GHR's etc

I normally would train two(sometimes three) weights for a long time. For example when I could squat 140kg x 14, I could squat 160kg x 7. Once I could do 160kg for 8 reps, started adding in singles at 180kg. I did so many singles at 180kg that by the time I had built up 160kg for over 10 reps, 180kg felt easy and the jump wasn't a problem.

I then did the same with 160kg and 180kg while doing singles with 200kg. I spent so long just doing these weights that 200kg became an easy single even on my worst day.

I'm going to start doing it with my bench press, but also use 15kg plates as well so I go up in 10kg jumps. I think 20kg jumps would be too big for the upper body lifts.