Maybe not - the earth isn’t a perfect sphere but rather squished a bit. So the levels won’t be perfectly the same. However, there is also the fact that when Ice melts and it’s already floating...the net sea-level is ZERO! Ice already displaces it’s own mass.
Now if Greenland were to melt - then we got troubles!
Google gravimetric depiction of the earth’s surface, including the oceans. The 6 inches, or 6 feet (perhaps even 60 feet) become laughingly insignificant.