Is the white dwarf the brightest star?
No; actually, white dwarves are rather dim.
nebula then protosar then red dwarf, yellow star or a blue giant then a red giant then a red super giant then eithr a white dwarf or a supernova from the supernova a black hole or a neutron star if it is a white dwarf it turns into a black dwarf then a black hole Nebula Baby star Star Giant or supergiant White dwarf Black dwarf
a white dwarf is the blue-white hot core of a star that is left behind after its outer layers have expanded and drifted out into space. and a neutron star are the remains of high mass stars. so the diffrence between a white dwarf and a neutron star is that a white dwarf is just a piece of whats left and a neutron star are the pieces of high mass stars