I grew up in Texas then went into the Navy where I was stationed with guys from the northeast. I picked up on their accents. When I’d go back home on leave, people would tell me I talked like a Yankee. When I visited the northeast, people would say, “You’re from the south, aren’t you?”
I went on to live in Georgia, Canada, back to Texas, then to SoCal and NoCal. No idea what kind of accent I have, but someone once thought we had gone to high school together in San Francisco. Call me a mongrel.
I have a similar background; born and grew up in rural east Texas on my grandfathers farm. Moved about quite a bit, army, college, work, traveled internationally a lot due to work, two year expat stint in the PRC, fam and I resided in Shanghai. While there I took conversational Mandarin along with Auto people from Midwest, Canadians, Aussies, etc. they liked to tease me about my Mandarin flavored with my texas accent. All in good fun....