Grinding Gear Games (GGG), the makers of Path of Exile have recently been purchased by Tencent, with an 80% stake. This ownership will increase to 100% in the next couple of years. If you want to boycott pro-China companies, PoE and GGG aren't a good choice!
Torchlight, another popular alternative ARPG, is also owned by Runic Games which was purchased by Perfect World, which is owned and operated out of China.