Linked from
The 15 pages that link to Pronoun, each with the reason it gives.
Grammatical caseRelated: Pronouns often preserve case distinctions even when ordinary nouns do not.
AdjectiveRelated: Some adjectives can describe pronouns, as in “something unusual.”
Non-binaryRelated: Non-binary people may use any pronouns, including they and them.
Trans manRelated: Many trans men use he and him, though individual pronoun choices vary.