MOVIE-CENSORSHIP.COM has only a comparison between the ALIEN theatrical version and the director’s cut.
I don’t have a Blu-ray drive, so cannot provide any screen shots.
Anybody still owning the old QUADRILOGY DVD box set - or the 2003 2-disc DVD release of ALIEN - as well as the current ANTHOLOGY Blu-ray release, (or just the Blu-ray release of ALIEN) can check for themselves.