In what order should I watch the Ghost in the Shell series?

The only unclear part is about where S.A.C. 2nd GIG and Innocence go in relation to each other, because they are both set in 2032. 2nd GIG is the second season of S.A.C. and should probably be watched directly after it.

The GitS movies, SAC-series and Arise OVA are all different interpretations of the source material/manga.

Ghost in the Shell/2.0 and Innocence are set in the same universe, and I would recommend to watch them first as they have the strongest story and production values.

The SAC-series has it's own separate universe and is more of a crime series where the movies are more philosophical.

The Arise OVA-series is also completely separate from both the movies and series, but somewhat serve as a spiritual prequel to both.

Regarding the SAC / GITS 2 relationship. My understanding is that, chronologically, SAC (both series) should come before the original GITS and GITS 2: Innocence. In SAC Motoko is present through all the series. Minor spoiler alort: at the end of the GITS movie she leaves, and her absence is continued in Innocence.

The new movie has huge alterations over the source material for what can be known from the trailer, but most likely can work between GITS and Innocence, with some licenses - i.imgur.com/4c8xY08.png

Hey, isn't the first and last elements in your list referring to the same movie ? I just downloaded a movie called "GITS The new movie (2015)" (which matches your last bullet) but it also matches your description as ending where the 1995 movie starts (your first bullet)

@LorenzoBoccaccia Now that it's out (for some time now), yes, the latest live action movie has significant differences. Mostly they can be summarized as saying that the development of full conversion cyborg technology was pushed up ~20 years (relative to Motoko's age). Instead of being one of the first full conversion cyborgs when she was a child, she's now one of the first full conversion cyborgs in her late teens to early twenties. Cyberization is still pretty new to the world. The movie focuses on events approximately one year after her conversion.

There are actually two completely different continuities that aren't strictly compatible with each other, considering what happens with the Major.

Ghost in the Shell and Ghost in the Shell: Innocence are in a separate continuity. Watch these two first if you like movies better.

SAC and SAC 2nd Gig are basically season 1 and 2 of the TV series. Watch these two first if you like TV shows better. Solid State Society is a movie in the same continuity as the TV series set after both seasons. Laughing Man and Individual Eleven are actually just compilations of the "complex" episodes of SAC and SAC 2nd Gig, respectively. You don't need to watch it if you watch the entire seasons.

Arise is a prequel story to all of the above. It doesn't quite fit either existing continuity. It's a similar set of themes, but told in more of a miniseries approach that doesn't maintain a status quo between episodes. Watch this first if you like binge-ready streaming shows better.