Here is my list before researching character archetypes:
Hero – Protagonist (P)
Villain – Antagonist (A)
Ally – on the side of P
Ally – on the side of A
The voice of reason – again could work for both P or A
Romantic interest – again with P or A
Mentor – as name implies
Victim – as name implies
The omniscient – understands what is going on, can see the wood for the trees (possibly the voice of reason?) – used in the authorial voice maybe?
Here is what I found from researching character archetypes:
There were 8 listed by K M Weiland on the above website archetypes were:
Mentor or Guardian
Love interest is the 8.5th character, as normally it is one of the above! Ignoring this one, the first eight pair up as opposites.
And from another website:
And from a third website:
I particularly like the goal and fear given to each archetype in this table.