Here's part of my lower body warm-up sequence.
I could get technical and go into the specifics on movement patterns, activation, stabilization and mobility - but instead I’ll just say this: a warm-up should flow.
Instead of warming up with single isolated exercises, by doing sequences of strategic exercises it helps prepare the body better to perform. After all, human movement is flow. Bonus, sequences are also time efficient.
Prepare with flow, move with flow!