What's the difference btwn loaded vs not-loaded front brake caliper

Probably take some flack for asking this but…I’m shopping online and see some calipers advertised as ‘loaded’ … what does that mean and what is the alternative?
Thx

Loaded= aside from brake caliper, it comes with the caliper bracket (new pins/hardware and boots of course) and brake pads

Unloaded= only caliper, no bracket nor pads

Semi-loaded= caliper with caliper bracket, no pads