Marvel Chronology Project

FB #1, from what the time placed Marvel Girl learned in the future

Phoenix Entity taking the place of Jean Grey (UX 101)

Sometime later

Phoenix Entity as Jean Grey

Sometime later

Dark Phoenix as Jean Grey

Sometime later, (UX 137)

Phoenix Entity as Jean Grey
Cyclops

Not long after, (UX 138)

Cyclops
Storm
Colossus
Professor X

Sometime many years later, from Marvel Girl's actual perspective

Marvel Girl (alternate universe, past)
The Phoenix Entity

Main Story

Marvel Girl (alternate universe, past) time displaced to the past
vacationers in Greece
Phoenix Entity as Jean Grey
Mastermind disguised as a vacationer in Greece

A short time later

Marvel Girl (alternate universe, past) time displaced to the past
Phoenix Entity as Jean Grey
staff and patrons at a cafe in Greece

Later

Marvel Girl (alternate universe, past) time displaced to the past
Phoenix Entity as Jean Grey
staff and patrons at Flames Night Club in Greece
Mastermind disguised as a vacationer in Greece

Minutes later

Marvel Girl (alternate universe, past) time displaced to the past
Phoenix Entity as Jean Grey
aliens fleeing the destruction of their world by Galactus
Galactus
Terrax the Tamer
Uatu the Watcher