Best way to access entire iCloud Photo Library for Family use?

Hi, we recently decided to use iCloud for all our photo storage + backup. So we moved everything from the local drive to the cloud version, and we have iCloud/Family stuff all configured properly. We have 2 parents + 3 kids, all on shared plan.

What works:

• Explicitly shared albums/photos
• On *MY* devices, but not others', access to the entire rest of the Library

What I am *trying* to accomplish is:

• On *ALL* devices in the Family, access to the entire rest of the Library

From reading, I can clearly put *everything* in the Shared > Family album, but (1) i believe I will run into the 5K pictures limit for a Shared album and (2) it still won't help with sub-albums/folders, etc.

So, is there a way to accomplish my goal?

Thanks!