Team of archeologists

I am about to make a one shot for my friends and I that'll take place in Chult. It's going to be a simple single session following a team of archaeologist's that have come across information that an ancient relic resides within a hidden temple deep in the jungle. I want to make a selection of pre made characters for my friends to choose from (4 players). I was thinking of making 6 different character's, each with a different class and they can pick whom they like. I usually make the "skeleton" of a character's design and then let the players "fill in the blanks" for personal preference things like race and equipment/weapon proficiencies/etc.

I'm looking for ideas for each class type. I have one player who loves magic and ALWAYS picks a full caster - this is the one I'm at the most of a loss on coming up with. Artificer is, I feel, an obvious choice for one. If anyone has any ideas they are willing to share I would greatly appreciate it!