My accounts were created separately in the early days of YouTube and they got linked against my will. It doesn’t show up as my gmail account in YouTube because

My accounts were created separately in the early days of YouTube and they got linked against my will. It doesn’t show up as my gmail account in YouTube because I kept rejecting their “please merge” requests, but besides the display name, they’re essentially merged and I have to log in with my gmail account. I don’t use my gmail for anything else anymore so I don’t care, but it was frustrating back when it happened. I know it’s just anecdotal and not a proper reference like you requested..