Just because some shows have everyone talking the next day doesn't mean they're going to have the highest-rated episodes.
There are a lot of factors to consider, not just OMG moments. And while Game of Thrones and competition series like The World's Best premiere — thanks to it airing after the Super Bowl — and The Masked Singer did quite well in ratings (the former scored a 7.0 in the key demographic of adults 18-49, while the latter featured several ratings of 2.6 and higher), we're looking at scripted series on broadcast networks.
Some of these probably won't surprise you, whether because a series came to an end or an episode aired after a sports event. Others might, if only because one of the shows has had 30 seasons.