For anyone wondering:
Hilt Tiers
Common - No buff Uncommon - +20 Stamina Rare - +40 Stamina, +10 Damage Epic - +60 Stamina, +10 Damage Legendary - +80 Stamina, +10 Damage
Fabled (Donator) - +85 Stamina, 10 Damage, +10 Force Mythic (Donator - Rare Variant) - +95 Stamina, 10 Damage, +20 Force Artifact - +100 Stamina, +10 Damage
(Some hilts give extra force power on top existing buffs)
Crystal Tiers
Common - +25 Saber DMG Uncommon - +25 Saber DMG Rare - +50 Saber DMG Epic - +65 Saber DMG, +25 Force Legendary - +80 Saber DMG, +50 Force
Fabled (Donator) - +80 DMG, +75 Force Mythic (Donator - Rare Variant) - +85 DMG, +100 Force Artifact - +100 Saber DMG, +75 Force
(Jedi Knights, Masters, Council, etc get a starting base damage that is factored into the above)