Are Investigator and Thaumaturge redundant?

Just got done with a session 0 making characters. Ended up with a Monk, Oracle, Alchemist(though they might change to Ranger), Investigator and Thaumaturge(me).

Will an Investigator and Thamaturge get in each other's way too much and be trying to do the same thing?

What would be a good class for me to switch into to balance the party?