Paladin of X?
Right now the human paladin seems a lot like “Paladin of Good” (or maybe justice)
How about this as a Racial Move:
Paladin of the Sun
While you are on a quest your weapon emits pure sunlight in a halo around you and even magical protection from sunlight won’t protect the creatures of the night from it.
Paladin of Nature (by Alex Norris)
You were chosen by Nature to protect her. When you pray for guidance, even for a moment, and ask “what here offends nature?” the GM will tell you, honestly.
There are hopefully tons of other options. As an inspiration, here are the deity domains of the cleric:
Healing and Restoration
Knowledge and Hidden Things
The Downtrodden and Forgotten
What Lies Beneath