I know Ash, Delia, Prof. Oak, Sycamore (I don't know about the other profs.) and that's it. I could have just stupidly forgotten some but I'm wondering if there's more.
All I know of: Ash Ketchum Samuel Oak Delia Ketchum Gary Oak Cedric Juniper Aurea Juniper Augustine Syamore Steven Stone Sapphire Birch (Manga) Yvonne Gabena (Manga) Tracy Sketchit