I write and record hundreds of sentences and format them in a way so they're ready to be fed into an AI model used in a chat bot. What job title would you consider this to be?
I think you are a "data curator."
This paper indicates that US participants consider a data curator as one overseeing the entire data management cycle, while their European/Australian counterparts have a narrower view focused on technical aspects of archiving in the final stages of the data cycle.
Below is an excerpt:
The use of the term data curator and its broad understanding was quite prevalent among the US professionals, while Australian and European participants made a clear distinction between data curators and data managers and did not use the terms interchangeably.
Participant P stated: "Data manager is for the first part of the data life cycle and data curator is in the last part of it. The data curator reviews, migrates, and enhances data and metadata, whereas the data manager helps with data collection, metadata standards, and creating coherent and authentic data sets (that ideally subsequently need less curation). A data curator rather works with the final data objects, to optimize them to a final version that can’t be manipulated anymore after that.