The pronoun 'what' is an interrogative pronoun or a relative pronoun.
An interrogative pronoun is a word that introduces a question:
What time does the movie start? The movie starts at seven.
What is your major? I'm majoring in chemistry.
A relative pronoun is a word that introduces a relative clause:
He saw what I did.
What he said made the audience laugh.
'than' is not a pronoun.
Interrogative pronoun
The pronoun 'them' is the third person, plural, objective, personal pronoun.
"Of" is not a pronoun. He, she, it, they, them, are all pronouns. "Of" is a preposition.
It is not a pronoun it is a common noun.
The word 'or' is not a pronoun; or is a conjunction, a preposition, or a noun.
It's called a reflexive pronoun.
Whoever is a subjective pronoun.
Video is not a pronoun, it is a common noun.
The pronouns in the sentence are what (an interrogative pronoun) and you (a personal pronoun).
The kind of noun or pronoun that corresponds with myself is a reflexive pronoun. The personal pronoun that would be used in this case is 'I'. In reflexive form you would say 'myself'.
"That" is a demonstrative pronoun. You "demonstrate" which thing you mean.