Different words for the personal pronoun “you” in spoken AmE: who uses which?

In American English, quite informally, one will hear different words or phrases for the personal pronoun “you” in its plural form. Perhaps it’s a way of making sure the listener understands you mean second person plural, not singular. Among other words/phrases, some people will say “you all”, “y’all”, “yous”, “yuse”, “yins”, “you guys”, “yumob” in addition to “you”. When there is such a variety of words with the same meaning, there must be a reason why you use one and not the other. Is one’s choice related to:

• age?
• region?
• ethnicity?
• social status?
• educational background?

Or could it be that they are really no markers and people will use one word one time, and another word another time, for no evident reason?

The following extract shows all main dialectal variants for informal plural forms of you:

Although there is some dialectal retention of the original plural ye and the original singular thou, most English-speaking groups have lost the original forms. Because of the loss of the original singular-plural distinction, many English dialects belonging to this group have innovated new plural forms of the second person pronoun. Examples of such pronouns sometimes seen and heard include:

• y'all, or you all – southern United States, African American Vernacular English, the Abaco Islands, St. Helena and Tristan da Cunha. Y'all however, is also occasionally used for the second person singular in the North American varieties.

• you guys [ju gajz~juɣajz] – United States,particularly in the Midwest, Northeast, South Florida and West Coast; Canada, Australia. Gendered usage varies; for mixed groups, "you guys" is nearly always used, though for groups consisting of only women, forms like "you girls" or "you gals" might appear instead, though sometimes "you guys" is used for a group of only women as well.

• you lot – UK, Palmerston Island, Australia

• you mob – Australia

• you-all, all-you – Caribbean English, Saba

• a(ll)-yo-dis – Guyana

• among(st)-you – Carriacou, Grenada, Guyana, Utila

• wunna – Barbados

• yinna – Bahamas

• unu/oona – Jamaica, Belize, Cayman Islands, Barbados, San Salvador Island

• yous(e) – Ireland,Tyneside,Merseyside,Central Scotland, Australia, Falkland Islands,New Zealand,Philadelphia, Rural Canada

• yous(e) guys – in the United States, particularly in New York City region, Philadelphia, Northeastern Pennsylvania, and the Upper Peninsula of Michigan;

• you-uns, or yinz – Western Pennsylvania, The Ozarks, The Appalachians

• ye, yee, yees, yiz – Ireland, Tyneside,Newfoundland and Labrador

Although these plurals are used in daily speech, they are not always considered acceptable in formal writing situations.