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, Edo Tensei, Sound Genjutsu, Kotoamatsukami, Limbo.

Hax Users: Obito, Kakashi, Sasuke, Nagato, Madara, Kaguya, Itachi, Hashirama, Toneri, Momoshiki, Urashiki, Minato, Kabuto, Orochimaru, Jiraiya, Tayuya, Shisui, Danzo, Hagoromo, Hamura.

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