I've always been interested in when Joker has henchmen that fit his theme or are normal dudes that are more of the logistic guy so his plans can work
Batman beyond had the Jokerz which gave them unique looks as well that fit the theme
Then you have the batman 2004 which had Prank and Punch and Judy
There's others as well
Overall though, kind of wish Joker had reoccurring henchmen other than punch line or harley
Just some people that he doesn't outright kill and can be good on their own