For the sake of this list I only want to focus on vertical, horizontal, and isometric auto-scrolling shmups. I do consider games like Kiki Kaikai and Fantasy Zone to be shmups, but they are outliers and I wan't this to be a more focused list. Non-scrolling enemy wave based games like Space Invaders and Galaga will also not be included.
Information Needed:
Spoiler
The reason I am posting this here is because I want your help. This list undoubtedly contains titles with serious emulation problems that makes them mostly unplayable (or not worth playing). If anyone has time to take a quick look through the list and mark the titles that have serious problems in MAME I would really really appreciate it. Any info is appreciated. Info about non-game breaking issues such as sound problems would be helpful too. As info comes in I will continually update the list with notes about minor issues, and removing titles that are totally unplayable from the list.
Additionally I seriously doubt that this list is comprehensive. So if you know of other games that are playable in MAME but not on the list please post them here so I can add them. Particularly I noticed "walking" auto-scrolling shmups like Gunsmoke and Guwange were not in the list I started with, so many from that subgenre will be missing. If you have experience in this area please add anything you can. I'd like this to be a good resource for members here looking for new games to try out without being overwhelmed be clones, bootlegs, and broken roms. Thanks for any input you give!