Board Thread:Naruto Discussions/@comment-34436445-20180627113230/@comment-33959444-20180627221716

Hax Jutsu: Kamui, Infinite Tsukuyomi, Preta Path/any Chakra absorption, Gudo Dama (or any Yin-Yang Release), Izanagi, Izanami, Creation of all Things, Deva Path, Totsuka Blade, Yata Mirror, Yomotsu Hirasaka, Amenotejikara, soul dragon, Amenominaka, fishing rod, FTG.

Hax Users: Obito, Kakashi, Sasuke, Nagato, Madara, Kaguya, Itachi, Hashirama, Toneri, Momoshiki, Urashiki, Minato.

I'd probably say the most haxed is Kamui and Obito/Kakashi are the most haxed users.