If you wanted to have the concept of a light airmobile tank but not necessarily having to shoehorn the M8 or the LAV-75 into the system, there's always the T92 Light Tank.
This was another project in the same vein but originates in the 1950s. Apparently a significant part of it's non-adoption for service was because it was not amphibious capable and couldn't be modified to be so. Other than that, it fulfilled many of the same requirements that the M8 and LAV-75 were designed for.
The project was cancelled in 1958 but the vehicle was by all accounts ready for service so, theoretically, it would have been on strength from the 1960s on and quite possibly still in service into the 1980s-90s.
https://en.wikipedia.org/wiki/T92_Light_Tank
http://warfaretech.blogspot.com/2014...ight-tank.html
https://tanks-encyclopedia.com/coldw...m-gun-tank-t92
T92
T92 in front of M41
And if you want to drive one, then WarThunder's chief rival World Of Tanks, has it!
Or even Armoured Warfare: -
https://aw.my.games/en/news/general/...t92-light-tank
Or you could just stay with WarThunder because they also have it available.