Help me decide next character to level up to *****

[FlyingV]

Finally brought all Eddies to 5*/100 (talismans being a different story) and am considering next character build.

5* Eddies: Holy Smoke, Soldier,Mummy, RTTH, Carriage Rider, and Speed of Light

5* characters: Allied General, Allied Soldier, Undead Axis Soldier

Typical Team:
Holy Smoke/Soldier/Carriage Rider (never used)
Allied Soldier/Allied General


Since I have 5* Magus, Sentinel, and Assassin characters, my first thoughts would be to level a Warrior or Gunner.

These are my likely considerations:

Warrior
Golden Son
Soulless Demon
Pharaoh Sun Spirit
Demon Dog
Wicker Dog King

Gunner
Undead Hunter
Allied Bomber Boy

Others
Soulless Demon
Pharoah Sand Spirit
Wicker Dog Queen
Possessed Rockets
Pharoah Water Spirit
Soulless Demon
Burning Mummy Dog
Artillery Dog

Which would you suggest from the list? Any other rec. that I didn't include that complements the team? Obviously I'd list an axis general or child of the damned if I had one, but I have a reasonably stocked character bank (no angels, rocket dog, other Golden Sons, but have many others)