Admittedly they are only 'ineffectual morons' while chasing ash.
Practically, they'd be intelligence experts given their disguise history, and scary planners, just...
Pretty bad at the actual battle portion, with them making up for such with brilliant planning, with crazy tech potential given how in said anime, they pivoted to tech in response to the pokecenter failure. And individually, Jessie may or may not be with nurse training, while James is unexpectedly knowledgeable, with a smorgasbord of hobbies alongside a background among the halls of the rich. Though details are murky given this isn't exactly the Pokémon world.(For one, Jessie might not have been able to enter any, given the only reason she was able to enter one in the anime was her up and joining a Pokémon school due to all of the others rejecting her.)
Definity an int hero, with a side of diplo.