Examples of some fixtures I like

A few more

Living room

I would choose a semi-flush mount drum shade with a diffuser.

One dramatic one of the options for your stairway.

All those close to the ceiling the same > The stiarwell one at least similar colors for matal and honestly I see no decor crying out for crystal Love the LR lamps so maybe that brass for the others some how .For mw only 2 lights need to be dramatic that is the stairwell and the DR all the others are bit players so I think thta is why I love the LR ones. elegant but understated

+1 for @Lyn Nielson suggestion

With your floors, I would choose a warm brass. Then, choosing by style, I would stay with the same manufacturer, so the finish would be the same.

Here is Possini with choices for ceiling fixtures in warm brass. If I see more than one in a space, like an entry or hallway, I would choose the same fixture.

https://www.lampsplus.com/s/s_possini-ceiling-lights-in-warm-brass/?s=1

Move into another room, staying with the same warm brass, I would choose for what is needed. Chandelier, pendant, sconce, etc. Whatever you like, constant being the finish.

https://www.lampsplus.com/s/s_possini-chandelier-in-warm-brass/?s=1

So choose your style; choose a brand; choose your metal; choose the location. Then you can mix and match and make it your own.

Have you ever considered doing an overlay on the mirror doors?

Put the fancy crystal fixtures where you can get to them to clean off dust and haze. Put the opaque shade fixtures in locations like the stairwell since the dust and haze won't show on them.

One fancy fixture in the dining room and then the Possini collection around the house.
When a fancy ceiling light is in a bedroom or hallway, it looks like the overdressed aunt at a picnic.

With all lights make sure they are led bulbs, not halogen which get very hot (guess how I know), and they bulbs are easy to change.

I'm a big fan of Hubbardton Forge lighting. Good variety of styles and finishes.