Been reading The Book of Lost Tales, and have often wondered about this one. The combatants are
1. The Valar at the end of the First Age.
2. Same as one, but add Morgoth, as he was when he fought Fingolfin.
3. All of the Valar plus Melkor at full power.
4. A non-stacked composite of all the Valar.
5. A stacked composite of all the Valar and all the weaker beings in the Tolkienverse (Maiar, Stone-Giants, Dragons, Eldar, Men, etc. )
Who could prevail alone in these scenarios?