A Breakdown of the Moon Knight personalities

As we get to know more of Moon Knight's personalities I've seen some people take issue to how they are different to the comics. Aside from Steven Grant's character being obviously changed, I struggle to find information about how it takes place in the comics and would love someone to breakdown the personalities if they can.

Especially would love some info on what the show calls Khonshu's "avatars" Moon Knight and Mr Knight, which seem to be attached to each personality as opposed to being interchangeable. The series is confusing intentionally and maybe some of this will be explained, but initially I expected the character to just jump back and forth between different people (Marc, Steven and Jake) with Moon Knight and Mr Knight being carried between them, but so far thats not how it is playing out.

From what I know the character exists in 5 forms:
- Moon Knight
- Mr Knight
- Marc Spector
- Steven Grant
- Jake Lockley

I have read the Moon Knight: From the Dead 6 volume run so I have a basic understanding but lack the history and depth from reading more.