Hip Hop producer & rapper/group that help each other blow up?

I'm talking about examples like 21 savage & metro boomin, playboi carti & Pi'erre Bourne, slayr & waera . Let's discuss some examples!

submitted by /u/Valuable_Past5089
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source https://www.reddit.com/r/hiphopheads/comments/1s7lk6l/hip_hop_producer_rappergroup_that_help_each_other/