Alphascape is AMAZING! (Spoilers!)

[Fynlar]

Maker's Ruin is more of the Warrior of Light's theme, considering it also plays in the fight against the Ascian Prime in Heavensward which had nothing to do with Ultima

https://tvtropes.org/pmwiki/pmwiki.p...nstallmentWins

Regardless of how many times it came up later (which is really not enough times for it to be considered the WoL's theme), it's definitely most associated with the Ultima Weapon fight because that's where it plays first.

Omega doesn't really have that much connection to Ultima aside from the fact that they were both used by the Allagans to hunt down primals

They have been closely related stronger/weaker cousins of each other in just about every FF game they're both featured in. They have usually even looked pretty similar. Omega raids as a whole have been about paying homage to some of the more infamous adversaries of the series.

And as far as similarities go, "ancient machina employed by the Allagans to capture primals" is a pretty big one.

It's really not that big of a stretch.