X-Universe indexes:

• Alpha Flight
• Bishop
• Cable
• Dazzler
• Deadpool
  
• Excalibur
• Gambit
• Mystique
  
• New Mutants
• Uncanny X-Men
• Wolverine
• X-Factor
• X-Force
• X-Man
• X-Men
• X-Men: The Hidden Years
• X-Men Unlimited
• X-Treme X-Men
  
• Short running series, Limited Series, Oneshots (Archangel, Beast, Iceman, Juggermaut, Magneto, X-Men: Hellfire Club etc.)