Native speaker of American English (GenAmE) with a handful of Southernisms but no Piedmontisms (no aboot or hoose):

• cot-caught split
• y'all is perfectly acceptable 2nd person plural, but usually "guys"
• singular they for unknown sex
• pin-pen split... maybe
• Atlanta - /et 'læ nə/ or usually just /'læ nə/
• hundred - halfway between /hun dred/ and /hu nrt/
• firefly/lightning bug
• supper when I was a kid, dinner now
• pockybook/purse
• both mow the lawn/cut the grass
• bathoom for bathroom- I don't know if this is a thing but people used to make fun of my dad for it. I say it that way but find it entirely unremarkable.

Accent quiz:

ɔnt, ruːf, ruːt/ræʊt, wɑʃ, ɔɪl, 'θɪ ə tər, aɪ ərn, 'sæ mən, kær ə mel, faɪ ər, 'wɑ tər, ʃər, deɪ tə, ru: in, 'kreɪ ɔn, 'nor lenz, pe 'kɑn, boʊθ, ə 'gen, 'prɑ bli:, 'spi tn 'imid͡ʒ, 'æ lə bæ mə, lɔ jər, 'ku: pɔn, meɪ ə neɪz, 'sir ʌp, pə 'd͡ʒa məz, kɔt, 'næ t͡ʃər li:, ə 'lu: mi nəm, en ve loʊp

toilet paper (not TP), potato bug, soda, tennis shoes, y'all/you all, daddylonglegs,nana/pappy/big mother/big daddy, grocery cart, the devil is beating OMG I can't say that, remote

NYT Dialect Quiz Map https://www.nytimes.com/interactive/2014/upshot/dialect-quiz-map.html

• 2 or more people: everyone
• big fast road: highway
• lawyer: both boy and flaw
• circular road intersection: traffic circle (didn't exist as a kid)
• crayon: cray-awn
• large freight vehicle: 18 wheeler as a kid, semi-trailer now
• pajamas: PALM
• sweet spread on cake: frosting (but icing is a particular kind)
• glowing flying insect: both firefly/lighting bug
• grass between sidewalk and road: (nothing) - I still don't recognize these
• caramel: cair - uh - mel
• shoes for gym: tennis shoes
• grass in middle of some streets: median
• sweetened carbonated drink: soda
• large feline: cougar
• drive thru liquor store: don't exist
• cot-caught: different
• sale of unwanted items: yard sale
• aunt: caught vowel
• night before halloween: no word
• small road parallel to highway: no word
• dinner vs supper: dinner more formal
• small gray curl up bug: potato bug
• long sandwich: sub
• easy class: gut