I've searched all over the internet, read the wiki, read the StackExchange, asked ChatGPT about it, asked Wolfram Alpha GPT about this, but I am yet to decide what notation for median and mode is 'the most popular' (I'm not looking for the 'most common' notion as I know that there is none for median and mode.):

From what I've read, I KNOW that:
a) Notation differs A LOT from place to place, country to country, discipline, etc.
b) I can pick and choose 'whatever' as long as I define it in a sentence and the notation 'makes logical sense'.
c) There is no internationally standard symbol for median and mode

I'm not from America, and my country uses M_o for mode and M_d for median as defined in high school textbooks, BUT I AM JUST CURIOUS ABOUT the rest of the world.

I've settled for:

• $$  \bar{x}  $$ i.e. x̄ for arithmetic mean (this is a no debate)

• $$  \tilde{x}  $$ i.e. x̃ for median (I saw it in a few places)

• $$  \hat{x}  $$ i.e. x̂ for mode (didn't see it used but GPT mentioned it, so I need further investigation)

just to stay consistent.

I AM VERY CURIOUS WHICH SYMBOLS DO OTHER PEOPLE USE AND WHERE (i.e. in which disciplines) (cuz I help kids learn math and always want to give (or at least tell) them the whole picture. )
Thank you in advance.