Gunbuster is not a VN and is nowhere as near the same experience as muv luv but it heavily influenced muv-luv and a lot of other animes, it is more light hearted, short and a little silly but you will see some similarities to muv luv and its really good on its own.

one good example and the reason why i decided to watch it are those songs:
https://www.youtube.com/watch?v=gbhpNsyELJc

VS

https://www.youtube.com/watch?v=T63WnocViSU + https://www.youtube.com/watch?v=aSWxwHXwCWw

Muv Luv has 2 animes and a few other untranslated(or translated not on steam) VN, theres also a fanfiction of muv luv thats insanely good and has close to 1 million words itself.

now then series thats like Muv luv:
-Chrome Shelled Regios comes to mind (though the feeels factor my not be as high)
-Knights of Sidonia is also up there
-Blue Gender (which is what Muv Luv probably took its inspiration from)
Theres also:
-Xenosaga
-Divergence eve (though the character drawn in that anime are insane)
-Evangelion (be warned the characters are annoying)

Utawarerumono PC vn. Isekai genre, meaning other world. Somebody from this world's Japan gets bumped to that world and has to survive.

Sword of Eternity Spirit of Eternity Sword 1.

The House in Fata Morgana.

FaultMilestone 1, although the series is not finished. Treat it more as an effective sound short novel.

The first time has elements of military strategy present in the story and mechanics. It is more interactive gameplay wise than MLA.

Fate Stay/Night VN has the action but not the military vibes. It is more like solo Battle Royale time but psychologically it is the same level of effect.

Planetarian is a pretty good short novel software that gives a good sense of whether people like these types of feel something Visual Novels. MLA is like a kind of future prophecy or fact written as fiction genre. It was created before anyone realized Quantum Computers had been made by D Wave. Similar to Steins gate talking about CERN when I had no idea what CERN or John Titor was.

The partial memory and emotional recall that people get when finishing the MLA series is due to part of their forgotten memories awakening. Every human, or at least most of humanity, signed a soul contract to incarnate on Earth to accomplish something, and then forgot all of it as per the contract rules. Once someone truly understands the Isekai genre theme, they can link it to their forgotten memories, creating a strong impact on the electrical generator that is the heart.

The heart is a quantum machine that links our soul to the body's energy fields. The brain is more like a wifi receiver and sender. For people that want to take the Red Pill over the Blue Pill, look up the experimental data and videos on magnifying moonlight vs temperatures.