Let's see... about the items, the things that you don't have on there are as follows:
Spruce: Grass Gummi
Anthony: Tough Helmet
Bonnie: Starter Pack (Oran berry, Pecha Berry, Cheri Berry), Small Human Tech (CD)
Josh: Thunderbolt TM, Special Scarf
Hex: Reviver Seedx3, Defense Scarf
Ven (Team Blue Steel): Starter Pack (Oran Berry, Pecha Berry, Cheri Berry)
Ratinka (Team Blue Steel): Starter Pack (Oran Berry, Pecha Berry, Cheri Berry)

These are the ones that I know, sorry if it's not everything.