Who are Jean Grey's enemies?

Jean Grey has had many enemies over the years. As a member of the X-men, she has faced villains, such as Magneto, the Brotherhood of Evil Mutants, Apocalypse, Mister Sinister, The Marauders, The Morlocks, and many more. As Dark Phoenix, she made everyone her enemy, especially the very X-men her true self held so dear. In her love life, she is most notably pitted against Emma Frost for the affections of Scott Summers.