All I can think for Dash and Harvey body swap is Harvey (in Dash's body) panicking "Oh god, I'm YOU" and Dash (in Harvey's body) smirking at his own face "You like it" ( ͡° ͜ʖ ͡°) It's not even a shipping thing, I just think Dash is a narcissist even though he is a good boy. Not legally or morally, just... On his own scale.
Oh GOODNESS yeah you have them completely read.
Here have the quickest alignment chart ever pieced together by a human being to corroborate your theories:














