Cute pond!
What people usually think of as "gold fish" are the 1-inch feeders that you see at the store. But when a fish is taken care of properly, especially in a pond with lots of natural lighting and food sources (algae, insect larvae, etc.) that can really bring out a fish's potential.
Looks like your white fish there has a comet tail (long fins).
The orange and black fish there is going through the phase of getting its "grown up colors" so to speak. Over the next few months (or even years!) the black will slowly retreat. Looks like he'll be solid orange after that.
The red and white fish could be called sarasa, depending on how deep the red coloring becomes. Typically on a fish like that, the body coloring is divided between patches of white and patches of deep red. The deeper the red, the more appealing the fish--and usually the more white, the deeper the red patches will be.
I love it when a goldfish has different lip colors than its main head color. Makes it look like it has little whiskers or lip stick.
Unfortunately, in the goldfish showing world, standard single-tailed goldfish like this (commons and comets) are under-appreciated. However, there are still ways your fish can be impressive! Feeder fish can have excellent growth, live for a very long time, and have beautiful, jewel-like coloration that really light up the pond!