Need advice on team comps for the Solomon raids

Just use the best ST servants you have with class advantage against each pillar? I don't think there's much of a strategy here, literally just best ST servants + class advantage+ decent bond + support = spam damage.

Forneus (Caster) - Ozy or Kintoki, both are good.
Andromalius (Saber) - Chloe
Barbatos (Assassin) - Herc or friend
Sabnock (Archer) - Herc or friend
Amon Ra (Rider) - Herc or friend
Halphas (Berserker) - Chloe or Kintoki I'd say
Flauros (Lancer) - Herc or friend

Then just put a waver or a merlin on your team to help with NP gen and fill the remaining slot with either a second support or second DPS, your choice. The pillars shouldn't be that hard to beat, it's a matter of trying to beat them quickly to farm more mats before the raids close.

Focus on your single target servants:

Jalter/Ozy/Chloe/Kintoki/Herc/Euryale.

Now to narrow it even further, focus on the single target units that have the highest bond level possible since damage scales according to bond. Use standard support servants from your friends list such as Merlin (buster), Tamamo (Arts), Waver (Any).