Migos
Dave
Kendrick
ASAP rocky
Pnd
Weekend
Majid Jordan
Jorja Smith
Pimmie
Ilovemakkonen
Naomi Sharon
Im sure there's a few some im missing.
But you're being disingenuous with the question. Literally every artist has had to build their own momentum to break in the industry otherwise why would drake or any label bother? How would they notice? Talent doesn't do it alone anymore you have to be able to generate clicks and views off that talent to get noticed. But drake propelled all those artist I listed to a level that wasn't possible before they got with him.