Considering Shelly's rebombee, Anna might use mostly fairy type and fabulous pokemon like shaymin,manaphy,meloetta,victiny, diancie,magearna,melmetal,marshadow(as a gift-link to shade maybe) hoopa(she is often able to see past what other people don't, like hoopa is able to travel through worlds)
El : pulse 2 for everyone and : ditto, keckleon(which in addition might help him to sneak on peoples),drampa(normal dragon to benefit of the holy field bonus to dragon attack), tutankafer(not a normal but it fits the holy place theme and gives him a counter to fighting type),ronflex(one of the best normal type)or bewear/ stoutland( loyal followers), blissey/mega audino(as medics and to incarnate the naive sheep he leads,braviary/mega pidgeot,transe-mode darumitan(like tutankafer he is a protector of "sacred places" and could give him coverage)
Heather: no real idea but mega salamence and her father's crobat as main aces