[Finnster]

IDK that they illegal clones, they are all likely just built by the same company and whatever company X goes to them and has them build their own branded charger.
You don't think Orion and Venom hire teams of electrical and software engineers, and build manu facilities for these things do you? No, they just contract the base manu's to build the chargers for them to spec. They resell it and pass the markups on to you.

Much is the same with lots of appliances. There are only a few dishwasher, water heater, dryer, etc manus (sometimes only 2.) GE, Kenmore, etc, just contract them to build them a branded unit. These are more shameless as Orion et al don't bother really changing any specs rather than the stickers.

EG. Foxconn.
The world's largest electronics manufacturer you've likely never heard of.
The build all the ipods, iphones, etc as well as products for Dell, HP, & a host of others. The one factory in China employs almost 500,000 people there. Hell, maybe they even built that charger and all its clones.