Marvel recently released its all new Ultimate X-Men continuity, with writer and artist Peach Momoko explaining that the series is doing something totally new. Set on the alternate Earth-6160, this is a world without Xavier's school or any of the franchise-leading faces like Cyclops, Wolverine, and Jean Grey that fans know and love. However, this is no accident – it's exactly what Marvel wanted.
https://screenrant.com/ultimate-xmen-1-no-classic-characters-new/