What do these email sign-offs mean?

Below are the commonly used email signoffs and their usage & meaning decoded.

a) Regards:

This one is a corporate fav and is considered extremely safe to use in formal and informal contexts. It's neutral and brief.

b) Best Wishes:

Another classic, it's a good mix of formal and friendliness at the same time.

c) Cheers:

if the email context is friendly, then I personally use this. It's friendly, fun, conversational, and chill. I use this specifically when I know the person and have interacted with them 1:1.

d) Thanks in advance:

Okay so hear me out, I have used this on multiple occasions where I want to set an expectation. The way I see it, we are expressing gratitude for when they deliver what is asked for in the email. Don't overthink it, I don't see this as a rude signoff.

e) Yours sincerely:

I use this when I know the person personally, also when I know the name of the person example: Dear Ms. James and so on.

f) Yours faithfully