By Function:
* Personal Pronouns: These refer to specific people or things (I, you, he, she, it, we, they)
* Reflexive Pronouns: These refer back to the subject of the sentence (myself, yourself, himself, herself, itself, ourselves, yourselves, themselves)
* Intensive Pronouns: These emphasize the subject of the sentence (I myself, you yourself, he himself, etc.). They function the same as reflexive pronouns but have different emphasis.
* Demonstrative Pronouns: These point out specific people or things (this, that, these, those)
* Interrogative Pronouns: These ask questions (who, whom, whose, what, which)
* Relative Pronouns: These connect clauses and refer to a noun in a previous clause (who, whom, whose, which, that)
* Indefinite Pronouns: These refer to nonspecific people or things (all, any, both, each, either, few, many, most, neither, none, some, etc.)
* Reciprocal Pronouns: These show a mutual action or relationship (each other, one another)
By Person:
* First Person: "I" and "we"
* Second Person: "You"
* Third Person: "He, she, it, they"
By Number:
* Singular: One person or thing (I, you, he, she, it)
* Plural: More than one person or thing (we, you, they)
By Gender:
* Masculine: He, him, his
* Feminine: She, her, hers
* Neutral: It, they, them, theirs
It's important to note that some classifications overlap. For example, "myself" is a reflexive pronoun, but it's also a first-person singular pronoun.
Ultimately, the number of "types" of pronouns is less important than understanding their function and how they're used in grammar.