What types of oil paints are most commonly used?

Lemon, titanium white, dark red, and cobalt blue are more common.

There are so many colors:

Titanium white, zinc-titanium white, flesh color, lemon yellow, medium yellow, Napu yellow, bright red, deep red, rose red, raw germanium , raw brown, cooked brown, earthy red, yellow-green, tree green, emerald green, olive green, lake blue, cobalt blue, ultramarine blue, plain, ivory black, coal black.