These are my X-Men timelines:
Deadpool 1 and 2 - Parallel Universe
Logan - Parallel Universe
Legion - Parallel Universe
The Gifted - Parallel Universe
MAINSTREAM UNIVERSE - Original Timeline
En Sabah Nur arrives in Egypt: 5000 BC
En Sabah Nur is defeated: 3600 BC
Victor Logan and James Howlett escape: 1845
Concentration Camp: 1944
James Logan in Japan: 1945
First Class: 1962
James Logan and Victor Creed are recruited by Stryker in Vietnam: 1973 (Autumn)
James Logan leaves Team X: 1977
The Last Stand Prologue: 1980
Weapon X Project: 1983
Warren Worthington's Flashback: 1990
The X-Men are reformed (Cyclops, Storm, Jean Grey, Beast, Emma Silverfox, Banshee clone, Quicksilver clone): 1990s
Wolverine joins the X-Men: 1999
X2: 1999
The Last Stand: 2000
Magneto regains his powers: 2001
The X-Men disband: 2007
The Wolverine: 2008
The Wolverine Post-Credits: 2010
DOFP Bleak Future: 2023
MAINSTREAM UNIVERSE - Altered Timeline
En Sabah Nur arrives in Egypt: 5000 BC
En Sabah Nur is defeated: 3600 BC
Victor Logan and James Howlett escape: 1845
Concentration Camp: 1944
James Logan in Japan: 1945
First Class: 1962
Logan changes the timeline: 1973
Xavier adopts Jean Grey: 1975
Archangel (not Warren) operates in Germany: 1982
The X-Men are reformed (Cyclops, Mystique, J. Grey/Phoenix, Beast, Nightcrawler, Quicksilver, M. MacTaggert): 1983
Warren Worthington's Flashback: 1990
Dark Phoenix: 1992
The New Mutants: 2008
DOFP New Future: 2023