Characters in The Wire

Currently doing my first rewatch of The Wire. I only watched it for the first time in July last year. The characters in The Wire are probably the best I've ever seen from a writing standpoint and pretty much every single scene and character being integral to the story just amazes me. Everything matters.

Was simply wondering who is everyone's:

1) Favourite character 2) Most intriguing character/most depth 3) Least favourite character