Per recommendations from Analytics Engineering (and my own personal preferences, tbh), we should use snake_case instead of camelCase for property names in EventLogging schemas.
Also in T191859#4255283 Andrew wrote:
We are trying to use the convention that fields named after dt are ISO-8601, and ‘timestamps’ or ts fields are unix epoch timestamps.
Since Sharvani is instrumenting parts of multilingual analytics in T190931 from scratch, it makes sense for that to use the new naming standards from the start, but there are dependencies on existing instrumentation that uses the existing naming conventions. We discussed this issue and decided that rather than having half of the new schema follow one convention and the other half follow the other convention, it's better to just rename these three common fields across all active schemas/funnels now.