2) 8 Guardian Forces are non-elemental: Siren, Diablos, Carbuncle, Cerberus, Bahamut, Cactuar, Tonberry and Eden.
3) This question is confusing, sort of. I dont know if you mean his Level 2 Limits, or his Level 1/2 limit. But he has: Braver as his first, Cross-Slash as his second, Blade beam as his third, etc. But the levels confusde me with thsi question ^_^;
4) Sacred's element is Earth.