Who are the past Buddhas mentioned in the Canonical Works? What references do we have in canonical texts on historical Buddhas and Pacceka Buddhas? Ideally including information beyond the commonly referenced 28 Buddhas.
"Historical" is fact established by historical science. Even historical existence of Shakyamuni is debated. There is no other historical buddhas besides Shakyamuni. That is other buddhas are present to us only as mythological characters.