I can think of some of my own, but it's nice to have some other gods in the field:
(All of the followings are gods)
Indian Pantheon
Saraswati (Fire)
Stats: To be distributed

Active skill: Cosmic Power
Deals a fixed damage to all enemies regardless of element. Following turn, team attack and recovery x150%
Leader Skill: Infinite Knowledge
Attack x2.5, HP x1.25, attribute relation isn't applied.
Lakshmi (Earth)
Stats: To be distributed
Active Skill: Prosperity
Enemies will become stun for 1 turn, next turn team attack x1.5.
Leader Skill: Create Wealth
Earn 2x Gold in battle. Team attack x2. x2.5 when there are 3 or more God. Attribute relation isn't applied.
Parvati (Water)
Stats: To be distributed.
Active Skill: To Battle!
Change self attribute to Fire, Fire attack x2. (This skill primarily bases on her aspect of Durga)
Leader Skill: Purity of esssence
When team only consists of Water and Fire Attribute, attack x2.5, x3.5 when only consists of Gods.
SM:
Shakti (Earth)
Stats: To be distributed
Active Skill: Universal Energy
Three rows of runestones will be added. Attack increases as more combos are made. (Attack x2 for >10 combos, attack x2.5 for >20 combos, attack x3 for >25 combos)
Leader Skill: Omnipotent
When ally is either one of the Tridevi, change attribute according to Ally. Team attack x3.5 when consists of only Gods. When heart runestones are dissolve, 50% chance of getting attack x1.5.
SM
Ganesha (Water)
Stats: Co-ordinate to that of Shakti's.
Active Skill: Thirty-two forms
Attack x2 for 2 turns. Deals 32 attacks at the enemies (Of original attack).
Leader Skill: Conjuring Weath.
Gold earned from battle x2.5. When paired with Parvati, team recovery x2.5.
Meso-American Pantheon: All gods from this pantheon has the same skill according to their attribute.
Voltan (Earth)
Active Skill: Quake of Century
Drop rate of Water runestones will be transfered to that of Earth runestones for 3 turns. Attack x1.25 when >5 combos are made for the first turn.
Leader Skill: Resolution of Earth.
When ten or more Earth runestones are dissolved, Earth attack x4.5, otherwise, attack x0.75. Attack x1.5 when no Water runestones are dissolved.
Chaac (Water)
^
Buluc Chabtan (Fire)
^
Ahau (Light)
^
Hun-Came (Dark)
SM:
Gukumatz (Dark)
Active: Serpent of Creation.
Self attack x10 but inactivate all leader skills. Activate until defeated or disabled. (Can be multiplied by active skills).
Leader: Hymn of Creation
Recover HP of 1x recovery. Deal 1x attack every turn after runestones are dissolved.
Tepeu (Light)
Active: For one turn all combos count -4 for self attack x10. If less than 5 combos are made, self inflict 5x of monster's attack.
Leaer: Light attack x2.5, recovery x1.5.