I'm gonna guess you're probably pretty shit at shmups overall if you're asking for tips on a handful of different games there, but let me throw out some of the more general advice:
- Learn your hitbox.
- Being at the bottom of the screen is not always the best option. Don't be afraid to use all of the screenspace.
- Learn your hitbox.
- Use a wired controller/control device (stick, pad, keyboard or whatever).
- Learn your hitbox.
- If you've got a display capable of it, and a game capable of displaying it, set graphics to Tate, which is just japanese for vertical, with Yoko being horizontal (a lot of shmups, particularly the ones you listed still go by tate/yoko so just roll with it). I find that the removal of huge ugly borders with dumb marquee art and bezels helps me focus better on the game.
- Learn your hitbox.
- Don't be afraid to bomb if you have to, trying to 1cc score is for after you've learned the game.
- Learn your hitbox.
- Don't feel like it's all lost if you lose a 1CC run. Keep trying. If you just give up and run through the same first 3 levels on repeat and ragequitting when you fuck up on a boss right after, you're just gonna burn out on your attempts. Go through the game. You need to learn it all anyway. If possible, use savestates to practice hard parts, and skip past shit you've already got down.
- Learn your hitbox.
Of course, since you mentioned no Touhou titles in your list, I'm gonna guess you don't like it, so I'll skip recommending Shoot the Bullet and Double Spoiler for movement practice. So I went and grabbed hold of ProMeTheus' guide to jamming out on DoDonPachi (not Res). It was written in 2010, so cut it a bit of slack for maybe missing some more modern amenities, and making copious use of older tourney terminology. But it has excellent advice for both score running, and 1CC. A lot of just great overall advice and tips and tricks, stories about his experiences, and more.
Here's a link to an old japanese guide to beginner STG/shmup play, on the off chance you know any Japanese.
Lastly, although PMT mentions it in the enclosed .pdf, let me stress:
Pick one game. You'll never pick up the full extent of what you need if you keep starting over on a bunch of games. Learn how to play one game in a mindset of 1CC, and you'll find a lot of mechanical skill transfers over to others, and you'll have an easier time going forward.
Good luck, scrubshit.