Hi, I am new to PCGW, I tried to edit the list on my own but failed to do so. It said I should file a request so thats here.
Additional Information I have got:
COD WWII: 2 player split-screen (versus and co-op zombie survival, no campaign) DiRT 4: surely does not have split-screen, I figure only Hot-Seat (if even?) Star Wars Battlefront (2015): 2 player split-screen (versus & co-op survival) > SW BF 2017 same modes
Also there is this tool called "Nucleus Coop" (also pointed to by user Mirh) which makes a lot of games be "Split-Screen" by running two game instances side by side (like a lan-party but not requiring 2 PCs or more than 1 user account). I propose to include an info somewhere, that those games supported by nucleus are not in that list and should maybe not be added to stop confusion. (otherwise would probably be an endless list).
And maybe also a note about emulators like Dolphin (Wii) or RPCS3 (PS3) which also offer splitscreen co-op experiences on PC (provided you own all the original hardware and games to emulate legally :>)