Distinguish manual vs auto-generated transcripts and identify original language in metadata

I want the transcript metadata (transcriptLanguages array) to include a flag or property that distinguishes between manually uploaded transcripts and auto-generated/auto-translated ones (e.g., "type": "manual" vs "type": "asr"). Additionally, it would be very helpful to have an "originalLanguage" or "isOriginal" flag to identify the video's source language. This is important because currently, using mode=native often results in 206 errors for auto-generated tracks, and without knowing which language is the original, I have to iterate through dozens of languages to find a valid native transcript, which is inefficient and difficult to implement.