All you really need to aim for is 40~50% atk/def down, some heals, damage mitigation and overdrive extenders. Debuff recovery and enemy buff removal too for some situations, both which can be dealt with Sol.

Your wind and dark team would be your currently most functional teams.

For wind, use Gaia, Cybele, Zephrys (probably spelt that wrong) and whoever else you want. If you use Sol in this party, you can swap out Zeph. I don't remember too much about the other SR winds you have, so I may be missing a debuff you have. Soul would be Joan with Ambush or Morded with Ambush or Trial by Jury but you'll lose a debuff. Though with Joan and awakened Gaia, you may be okay with mitigation and no Black Propaganda. What you want to get for your wind team is Oberon so you can use always Morded instead.

For dark, Hades, Lu Bu, Sol and whoever else you want. Soul should be Morded with Ambush or Gawain with Black Propaganda. Pretty much any other dark SSR will help. If you get Satan or Amon Unleashed, you can use whatever soul you want. Dark Amaterasu would be the biggest game changer but unlikely for you to get.