What kind of man is he?
What sort of person is he?
Try to find out what kind of people have the most need of help?
What manner of man are you?
I would say so.What kind of a person would wrrite to someone they heard on the radio?是我找到的符合题意的英文用法.我的理解what kind of a person比what kind of people更有确指的意味.
希望能帮到忙.加油!