Souls:Van Helsing, Billy the Kid, Crowley. Note that you'll usually just use Yori.
Fire:Amon, Yamaraja -20 B, Dakki, Prometheus, Heph(SR) -15 A, Culyune(SR) -10 C, Sati(SR) -10 unique (reminder: Cerberus -15)
Water:Nike -20 A, Celia -15 A, Cthulhu -20 C, Pluto -30 unique, Diana, Dagda, Saraswati, Neptune, Gabriel(SR) -12 A, Parjanya(SR) -20 B, Belphegor(SR) -12 B
Wind:Hastur A -20 E -10, Poseidon, Manes, Aether, Minerva, Titania, Cybele(SR) -15 B, Oberon(SR) -15 A, and of course Atum. Because 6m full bursts are going to be totally fair and balanced. (reminder: Hraes -20)
Thunder:Anshar -20 E, Nuwa -20 B, Samael -30 A, Marduk, Arianrod, KARIN, Vishnu, Noel(SR) -15 A, Nyarl -15 C (reminder: Nidhoggr -15)
Light:Tishtrya -15 B, Nike, Baal, Michiru, Hastur, Michael, Eros, Shamash, Diana(SR) -15 A
Dark:Satan -15 A -10 E, Amon -25 C, Samael -25 E, Nyarl -20 E (and -30 unique 1/2 uptime), DWU, Nuwa, Bastet, Hades, Pluto, Chernobog, Agaliarept, Selene, Nyarl(SR) -15 A