I do not know about those particular marinades.
But....stores like Dollar Tree do not develop and package hardly anything on their own.
Is is called "Private Branding" or "Store Branding".
They simply contract with a manufacturer and work a deal to put their label on the product.
This is even the case at large food chains like Winn Dixie, WM, and such.
All those store or generic brands are produced and packaged by a few producers to the chain's specs.
I am speaking in generalities here. There may be a chain that actually has a manufacturing or production facility for their stuff.
Normally cheaper and may be a good way to save a buck or two.
Try one and see if you like it.
"Flirtin' with Disaster" BBQ Team (RETIRED)
FBA and KCBS Cook and Judge.
Former owner of a WSM, a Smokey Joe, a Charbroil Commercial gasser (junk), the legendary "StudeDera", a Fast Eddy PG500, and Sherman.
Now cooking with a Yoder YS640
Proud Pellet guy cooking on real wood.