There are some folks working on a very nice Su 30 mod (search Codenameflanker) They are also working on a Su 35. Keep in mind these are mods, but they have a fully modeled cockpit and are in process of creating their own respective flight models.
The cockpits look nice and modern and most things are clickable. Still pretty immersive to fly on the Syria map - where they operate in RL.
As mentioned, there isn't enough data on these birds and the Russian government isn't hot on the idea of simulating them for the general public while there are multiple wars going on.
Although I have seen Russian flight trainers for new aircraft and I'm almost 99% sure Eagle Dynamics have contracts with the Air and Space Force for these, it looked awful a lot like DCS or the DCS engine. Just not for us
As far as Ka 50 being in-game, it was basically a tech demonstrator and didn't really see combat. Ka 52 is in active combat service, so fat chance we will see it in game. Even so, Ka 50 module was made in 2000s when laws were looser and relations with the west, much better.
Mi 24 is older than dirt, so I'm not surprised it is in game, like Mig 21 and soon Mig 23.