I think the ad group name matters, but does the campaign name have any significance on relevancy, QS?
It shouldn’t. Quality score is mostly based on how relevant your KWs are compared to your landing page.
Campaign name doesn't matter, but structuring your ad groups with right naming nomenclature will be of help. But all that matters is relevance of your kw's, ad copy and landing page, so be sure to take care of the same.
compaign name related to add only helps to user to understand which compaign for which ad group if you created more compaigns in your account other thing the ad group name is important and landing page according to your keyword is important thing