I've just noticed that contributors aren't credited when their changes are ported forwards. For example, the 2.3.6 release notes do not credit @dreis2211 for #24119 which was ported forwards into 2.3.6 under #24121.
I'll flag this for team attention so that we can discuss how we might go about doing this. I think we might need a combination of changes to the forward porting script and the release notes generator.