Zelda BOTW 2 - Unlikely, I think this is coming 2021.
Metroid Prime 4 - Very Unlikely.
Bayonetta 3 - Possibly, we still haven't seen anything but it's been silent for a long time and it may be a short window between it's reemergence and it's release.
TBH I have no idea about unannounced titles, I can say a few I want like Mario Strikers but it's not something I expect will actually happen.
Mario 3D World port or Mario 3D World sequel seems like a good shout though.
LTD: PS4 - 125m, Switch - 110m, XBO - 51m
2020: PS4 - 9m, Switch - 22.5m, XBO - 2.5m, PS5 - 4.5m, XBX - 2.8m