for their cinematic effect

I see. Lenses are more responsible for a cinematic effect than bodies (cameras themselves). You can buy a retro lens known for its cinematic effect and use it on a more or less modern camera.

A Soviet lens Helios is one of the classical examples (though, it'll be manual focusing as I know):

mirrorless

You can buy a great (secondhand) mirror camera of the last generation by let's say Canon - it's gonna be much cheaper now as everyone wants mirrorless and add a cinematic lens to it like Helios (it is not expensive).