Here are some references that can help you select sizes of ceiling lights:

https://www.lumens.com/the-edit/the-guides/how-to-choose-the-right-size-ceiling-light/

https://www.alconlighting.com/blog/residential-led-lighting/how-do-i-determine-how-many-led-lumens-i-need-for-a-space/

https://www.modern.place/led-lighting-calculator/

First choose LEDs if good lighting is the aim. I usually like ones you can change th bulb but the newer integrated ones seem to be pretty good I have this one in my bedroom and it is awesome foe overall light but you have to remeber ceiling lights are only one level of lighting in a space you still need table lamps maybe amix of table and floor lamps .

Bulbs are not included with the fixtures. You choose your own LED bulbs to put in.

The style of these fixtures could be considered Deco, Modern or Contemporary. Is that going to be the style of your furnishings? A fixture that's a good fit for a kichen might not be the best choice for a hallway or bedroom.

You'll be installing LED bulbs so a 100 watt bulb is only going to be 16-20 watts

My question is: why would you want to choose the same fixture for every room? They can be different and part of each room's individual decor.