When I was in the Middle East, I worked with a Texan that had grown in up Scotland and had a thick Scottish accent.
He had previously spent 8 years in Saudi and was fluent Arabic.
The contractor had mostly Lebanese and Palestinian Foreman and leaders. They were making fun of his accent. When I asked about if the Scottish was bleeding into his Arabic, he said no, they think I sound like a Saudi.
My wife is from the Philippines...raised speaking Visayan and English...since being in the south for so long...her English has a southern accent....many Filipinos laugh when we travel....she’s says ya’ll and has a heavy southern/Visayan accent....can be comical at times.