“Different American accents pronounce enough differently. e.g. East Coast.”
Ha - I love the study of accents. I used to listen to tapes of different accents meant for actors because I find the topic so fascinating. I myself have a Philadelphia accent (not NY!) modulated with living in the midwest. I don’t know of any region of the US that pronounces the word “enough” any way other than the standard. If we were talking the cot-caught merger, or Mary-marry-merry, or broad vs flat A’s, or the Inland Vowel Shift, then we’d have a discussion, but I don’t think “enough” is a word that varies by region.