2CV was mechanically linked front to rear. BL Hydrolastic was front to rear hydraulic with rubber springs and relatively simple (passive, no controls). BL Hydragas was gas-over-oil and interlinked front to rear but passively with no controls. Citroen DS was the super complicated one. Air suspension doesn't have a good reputation in some quarters ... but practically every tractor-trailer rig has it nowadays, although their systems are old tech.
Hopefully they're using better materials for the airbags nowadays.
I am not sure but I think Rivian is getting their dampers from Ohlins. I spotted a "Made in Poland" label. The damper-valve section of those dampers looks suspiciously like Ohlins TTX.