Woah there was a lost Homer epic comedy about a bumbling fool named Margites?

There's also the Telegony. Odysseus has a son through Circe who winds up killing him and marrying Penelope. Odysseus son through Penelope, Telemachus, marries Circe. There's some wild stuff that doesn't survive.

Looking through these it’s crazy to find out that The Iliad is only 1 of like 5 original texts on the Trojan war. We’re reading book 2 of a 5 book series

It was an oral epic passed through generations for quite a while before anything was written down so there isn't necessarily much of an "original"