Kentucky- 70-80% of Kentuckians identify as Southerners living in the South with the lower number around 72%

Tennessee- 81% of Tennesseeans identify as Southerners living in the South

North Carolina- 74% of North Carolinians identify as Southerners living in the South

Virginia- 60% of Virginians identify as Southerners living in the South

Arkansas- 83% of Arkansans identify as Southerners living in the South

West Virginia- 63-64% of West Virginians identify as Southerners living in the South

Maryland- 27-30% of Marylanders identify as Southerners living in the South

Missouri- 6-24% of Missourians identify as Southerners living in the South

Delaware- 10-20% of Delawareans identify as Southerners living in the South

Oklahoma- 51-54% of Oklahomans identify as Southerners living in the South

*Forgot to mark Oklahoma on the map

Of course you'd probably be able to find polls that show varying numbers but this is taking together a number of polls and research from the late 90s-2020s averaged out together. I listed some of the research links I used below.

https://web.archive.org/web/20100530083044/http://www.unc.edu/news/archives/jun99/reed16.htm

https://www.vox.com/2016/9/30/12992066/south-analysis

https://agris.fao.org/search/en/providers/122535/records/65df264d6eef00c2cea1dade#:~:text=Kentucky%2C%20Missouri%2C%20and%20West%20Virginia%20occupy%20a%20unique%20place%20on,politics%20public%20opinion%20west%20virginia

Rethinking the Boundaries of the South by H. Gibbs Knotts, Christopher A. Cooper

https://www.southerncultures.org/article/rethinking-the-boundaries-of-the-south/