One of the things I noted recently is that I have purchased RAVPower, Aukey, Anker, and OMAKER products which all came in nearly an identical packaging style. I suspect many of them use the same products or same distribution vendor which whitelabels the products for them.
I used to notice this a lot more often for Anker, but their stuff seems to be diverging. I wonder if they bootstrapped from some of that stuff but have been moving more towards their own products.