Somewhat new player after some guidance in jobs!

[Bardo]

Well if you were going to play summoner at endgame, you would be expected to level up Bard to 34 to pick up Quelling Strikes as a cross class ability anyway. You would also be expected to level up Black Mage to 26 in order to pick up Swiftcast.

For that reason, I would say go with Bard or Black Mage next.
Both are classes that you can level mid-way through and not "waste" any time if it turns out you don't like the way they play either. Both are great solo/questing classes, and both get an AoE fairly early on that makes leveling with Fates quite fast.