Tried to a bit in the stories, and made a couple real shit doodles to get a better picture for myself. Basically same structure as a nandroid with the ball jointed shoulders/hips, my first thought was that they'd be as similar as the Buran was to the Space Shuttle for the same reasons, clout/similar purpose/industrial espionage. Shaped steel plating riveted together for the casing (they'd shine like chrome in the light without any clothing) and the cheek-lights are just rectangles instead of circles to set them apart. Another small detail is the little line nandroids have going upwards from their eyes extends down as well on soviet-droids, I figure it's a seam and their heads are shaped plates that fit together like an orange peel and riveted there.
All USSR bots have names ending in 'A' because I think that's just common Russian naming convention and it mirrors nandroids' names ending in 'Y'. I haven't pictured any with hair-color other than black until now, I'd wager they're all fairly uniform in appearance without the extreme customization of their capitalist counterparts.