Does Kendrick Lamar use an amphibrach (unstressed / stressed / unstressed) followed by a spondee (two stressed syllables) when he raps, “Be humble. Sit down”?
Or is it some other combination of metrical feet?
How are your scansion skills?
Miller Williams’s book, Patterns of Poetry, can help.
And if you use Ableton Live, try out The Poetry DNA starter pack too (go to Live Packs page). It has a metrical foot rack! (Sounds like, but is NOT, a medieval torture device.)