2 Character party

I'm playing a custom game on default mode with single save. My character is a jack-of-all-trades Githyanki with these classes:

1 Rogue, 2 Knowledge Cleric, 4 Lore Bard, and the rest Fighter.

My companion Lae'zel is a Dexterity-based dual-wielding Barbarian. It’s not working well so far. Do you have suggestions for different class combinations? I’d like to try some less popular multiclassing options if possible.