I would like to suggest you to build your team but I didn't even know what characters do you have.
- If you want to use SP SS Broly then make your team with Movie Saga tag, Saiyan tag, or Purple color team tag.
- For SP SSG Goku, this character still lack of tag synergy, but you can combine him with Saiyan tag.
- Then SP KK Goku almost same like SP SSG Goku he's great unit but because of his Z ability only Blue color team tag and Saiyan tag that's great for him.
- The next is SP Majin Buu. He's great with Regeneration tag or Green color team tag but I prefer to use him with Regeneration tag.
- SP Kid Trunks and EX Goten must be combine with Hybrid Saiyan tag or Saiyan tag.
- EX Bardock and SP Super Vegeta is good at Saiyan tag or Yellow color team tag.
It's up to you, if you wanna make great team for PVP/PVE then you must make a team with good Z ability synergy, consider the best unique ability of each character, highest stats, and comparability with equipment.