In fact according to the folks at Android Police, they have noticed that Google has started to roll out a new feature for some Google Photos users where photos are grouped together based on timing and similarity. For example if you were at a birthday party and take a bunch of photos of the birthday person cutting a cake, Google Photos will group those photos together and will also suggest which of the photos might be the best.
Of course “best” is subjective, but as we have seen in the past, Google has been using machine learning to help computers figure out what we as humans consider to be good photos. Obviously you don’t have to take Google’s suggestions if you don’t want to, but for those who are lazy to sort or not too fussed, then this could be a quick and easy solution. It is unclear how widespread the rollout of this feature is, but do keep an eye out for it if it sounds like something you think could be useful.