Zacks are usually fine, Zaks are usually chill, Zachs are a fucking disaster and are like playing bingo with what mental illness they have, what cult their family is in, and how much of an incel they are.
Every Brook/Brooke I've known has been very loud, and very talkative. This earned one of them the nickname "Babbling Brooke".
Every old guy I've met named Larry has been a bro, maybe the type to talk your ear off but good guys in general.
Aside from one example, I've found every Dave to be a good dude with good taste in food.
Ironically every Karen I've met has been super nice, very patient, and usually is in a managerial role.