though I say it who should not

anybody who is anybody

Any person who is well-known or important, especially one who has prominent social standing.

dog who caught the tire

One who accomplishes a seemingly impossible feat, but does not know what to do next.

everybody who is anybody

All of the people who are well-known or important, especially those who have prominent social standing.

final say

The right to make a final decision.

have a say

To (receive the opportunity to) voice one's opinion.

I'd say

It is my estimate or opinion.

I'll say

Used to indicate emphatic agreement

let's not and say we did

Indicates that the speaker does not agree with a proposed action, and does not wish to participate.