Amy, I love the colour and shape of #1 on you! Why doesn't it work with any of your jackets? Even if it doesn't, I like it as a stand alone if it works well with your bottoms.
#2/3 is FAB. Looks terrific.
The black one seems nice, too.
The jackets may seem tough to style because, relatively speaking, they have ALGO. But once you find the right partners for them, no problem. I think with the one in #5 I might be tempted to go really simply, with a simple scoop neck (not a low scoop) top either in the colour of the bottom you're wearing or a tonal variation (for a sort of column of colour) or maybe one of the jacket colours. It's just a question of finding a simple neckline that won't compete. Some people look good in a collared shirt or a bow blouse with a jacket like this, but you'll have to try it on to see if it works for you.
For the other jacket, I'll bet Natalie has some great ideas (and images). She loves hers and wears it often. I think she sometimes wears it with soft blouses. Being a bore, again, I'd probably wear it with something very simple underneath. Just something that filled the neckline in, especially if you didn't intend to take it off.