to me, what sac was doing sounded totally different from SoCal gangsta beats but both sounds overall are old styles. it just came off as darker than SoCal but the technology was pretty simple, so you can clearly hear it in old school Sac beats; to me at least. i guess we'll just have to agree to disagree.
i think you're right, i'm thinking more of the style but not lyrics, since trends change and certain phrases and words will reflect the era. at least no one is saying blow up like the world trade anymore.
as for the lynch and rip beat, i know it samples a troutman song and some other thing but i'm talking about how it's all was put together or laid out. it has samples of cypress hill and snoop in the hook and some other funk track that runs along the bounce to the once drums [can't remember the name].