I was wondering if the following sentences mean exactly the same:
1a. She’s invited all of you.
1b. She’s invited you all.
2a. Lucy sent her love to all of you.
2b. Lucy sent her love to you all.
3a. They all went at home.
3b. All of them went at home.
Actually I doubt weather using 'you all' instead of 'all of you' which sounds more natural in standard English, is a less preferable choice or they do not make any difference in both formal and colloquial English at all.
Ps. having into consideration that in number 3 we have a subject pronoun.