Water or Isopropyl Alcohol for things like screens or windows with tint. The higher the concentration the more water.
Bleach or bleach product for toilet/shower
Baking soda for any cloth you can’t bleach
Windex Multi-Purpose for literally any other surface (it’s amazing). You can technically use it in the shower/toilet, but you’ll have to scrub harder.
My parents keep like every cleaning product known to man and it’s annoying as fuck to find what you need when I help them out. I’ve only used these 4 basic products to clean everything I own over the past 8 years.