Chingy once rapped under the moniker H Thugz and a member of St. Louis group, Without Warning
Before Howard Bailey Jr got the stage name Chingy, he went by H Thugz. H Thugz who we now know as Chingy, was a part of the St. Louis group, Without Warning — Without Warning on 49 Productions with M.G.D. & Mysphit. One of their biggest, local hits is “What's Poppin Off.”
Metro Boomin, who is also from St. Louis, named his 2017 collaborative album with Offset and 21 Savage, Without Warning. While Metro Boomin hasn't gone on record to confirm the connection of the St. Louis group and his album title being connected, the coincidence is very rare not to be true.
Update: 10/31/2020: Metro has confirmed his album is indeed titled after the group Without Warning.