This is the list of stages and where their rel files direct them to.
All of the stages can go over Battlefeild by just renaming the stage to STGBATTLEILD. 
No rel is needed. 

Cyber Track Zone - Wario Ware Inc

Sunset Hill Zone - Green Hill Zone 

Twinkle Snow Zone - The Summit

Chaos Angel ZOne - Brinstar

Route 99 - New Pork City

Ocean BAse Zone - Big Blue

Alter Emerald - Distance Planet

Toy Kingdom - Hanenbow