I probably wouldn't include any shmups either. G-Darius maybe. Recommend me your fav shmup to change my mind, though I doubt it will manage to.
I'm surprised that you, as a gameplayfag, don't like shmups. They'd probably be about 15% of my top100.
Batsugun, Tatsujin Oh/Truxton 2, Raiden Fighters titles, DoDonPachi, DDP DOJ, Mushihimesama, Mushi Futari, Ketsui...
(you can probably tell I don't like horis)
I don't dislike them per-se. As mentioned, G-Darius might make my top 100 of all time list to play before you die. Probably not but I am a fan. I appreciate that they are focused on challenge unlike that other soyboy, It's just they are dead simple, and therefore lack depth. They are wholly
on rails, there's very few mechanics, level design isn't diverse enough. You run out of credits and you gotta go through the same motions again with very little divergence. They're repetitive and shallow is my experience with them - that's fine, there is a place for that for sure (e.g playing in brief stints at the arcade), but of the pool I played, I can't rightfully value them alongside deeper, more satisfying games of which there are far more than 100. I still respect that they are gameplayfag games and purely focused on being a game...but maybe I just need to play more of them, as I don't even recognize most of those titles you mentioned.
Also as a gameplayfag, I still value secondary elements of a game a lot - mood, atmosphere, story, music. And it is those elements along with its more diverse gameplay (branching levels, enemy captures etc) that make me rate G-darius quite highly. But again, I don't know the genre THAT well as I was turned off after playing what essentially felt like the same boring dead simple game each time I gave the genre a chance. There was so damn many shmups back in the day. Look at this shit, over 70 on the Mega Drive/Genesis alone! Perhaps I got unlucky and only stumbled upon the shit ones IDK.
I grew up in the 90s, absolute golden age and when games were frequently offering significantly more gameplay depth than this on rails dead simple repetitive 80s arcade standard, in addition to branching out more than ever with the aforementioned secondary elements. Shmups gradually got left behind. Give me the clear best shmup that isn't dead simple mobile gaming-tier gameplay depth and I'll emulate it right now.