One could class some of these variations as "ASCII extensions", although some misuse that term to represent all variants, including those that do not preserve ASCII's character-map in the 7-bit range.
wˈʌn kʊd klˈæs sˌʌm ʌv ðiːz vˌɛɹɪˈeɪʃənz æz "ˈæski ɛkstˈɛnʃənz", ɔːlðˈoʊ sˌʌm mɪsjˈuːs ðæt tˈɜːm tə ɹˌɛpɹᵻzˈɛnt ˈɔːl vˈɛɹiənts, ɪŋklˈuːdɪŋ ðoʊz ðæt duːnˌɑːt pɹɪzˈɜːv ˈæski kˈæɹɪktɚmˈæp ɪnðə sˈɛvənbˈɪt ɹˈeɪndʒ.