The closest to that would be to pick the "Date Limit" with the same bar to the right. Also not "close to completion" but rather you can filter "Completed" ones in the "Prefix: Status" area.
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Granted that won't tell you much besides stuff that has recently updated or already finished development games, so unless you check every single post's Changelog, you're out of luck.
Also on that note, it would be quite difficult (or rather time consuming) to do something like you mention as most of the stuff is pretty subjective.
For example, the recently released "SCOOB!" movie was more or less loved by kids cause it had a ton of references to relatively new-ish gags and trends but for the vast majority of people (ie. people who grew with the characters), it's a bag of mixed feelings but overall a dislike for the modernization.
Now, let's take into account that comparison of (at least) 2 different points of view. Plenty of games in here have different types of content being added to them and some offer different levels of more content. For example, HTML games are far easier to add a ton of content as most of them are just text based stuff, so you could add 40-80 pages worth of dialogue and call it a day, meanwhile, 2DCG/3DCG (depending on the quality of the renders/how fast the dev and/or artist is) is gonna take a bit longer to create a considerable amount of content. And that goes without possible bugfixes being addressed in upcoming updates.
Also in this mindset there's the question "How much content is 'a lot' "? Would you consider 3 new long scenes a lot? Would you consider 7 short ones a lot? What's the metric here? It's quite difficult to settle with a single one everyone agrees with.
Well, got sidetracked as well in there haha so TL;DR not really an easy/quick way to do what you want other than you filtering stuff manually and checking changelogs or just search for already "Completed" games and be the judge on what they have to offer c:
