Superscript italic Latin lowercase letters in Musical Symbols unicode block (`U+1D18C`‥`U+1D191`) (ExtIPA prosodic symbols).

[John McWilliams]

• The requested characters are ...
  • Latin
  • Cyrillic
  • Greek
  • Punctuation
  • Diacritic / Mark
  • Symbol
• The requested characters are used in ...
  • The alphabet / character set of a natural language.
  • The alphabet / character set of a constructed language.
  • The alphabet / character set of a transliteration or notation system.
  • Mathematical or other professional use in documents.
  • The symbol set of a programming language. For the languages that support using arbitrary symbols, please provide usages in well-known components or libraries.
  • The symbol set of a command-line program.
• For each character you requested, there is at least a monospace/programming font supports this character. Provide images below.

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These are essentially superscript + italic. Additionally, in ExtIPA use, they are often passed through text markup to make them subscript at the same time; This may be handled by making them "midscript" instead as a compromise, but it's up to you.
𝆌𝆍𝆎𝆏𝆐𝆑
Julia Mono supports one:

Unifont supports the rest:

See:

• https://en.wikipedia.org/wiki/Extensions_to_the_International_Phonetic_Alphabet#Prosodic_notation_and_indeterminate_sounds