Recently, I asked What are the manufacturer codes for rebranded lenses?
My intent when writing the question is that people with knowledge of different distributors and brands could write new answers, similar to What do all those cryptic number and letter codes in a lens name mean?. However, it's been suggested that the question is too broad and should focus on just one distributor or brand (Vivitar).
Should there be a single question for this topic or multiple, near-duplicate questions for each distributor/brand?