Take out the extra notes from the bassline and you have four main notes. Each take up two beats, and the third (Bb) is delayed and comes on the two of the second measure.

D C | Bb A |

In numbers, you have 1, 7, 6, 5 (minor key).

You don't really even need numbers because Knee Deep is in the same key. The jacked bass line is the same four basic notes (D, C, Bb, A), with the Bb delayed. Dre Day takes the same thing down to the key of C (C, Bb, Ab, G). What's My Name is the same thing taken down to B (B, A, Gb, E). G Funk Intro is the same thing but in Db (Db, B, A, Ab).

Doggy Dogg World sounds the most different because it isn't sampled, it's replayed. And whoever replayed it added a couple extra notes in between the progression (probably to try to make it sound a bit different), but it's still the Knee Deep bass line.