not technically on top for the coda? Richter? which rec did you listen to? many different performances can be found by him.
Anyhow, I disagree with all you say about Richter's playing. 
But I will second your recommendations of Cortot and Rubinstein. 
The one here:
https://classic.chubrik.ru/Chopin/Ballade_Richter_4.htmlListen to the part about 40 seconds from the end, or about 10:25 from the beginning - it sounds scrambled. Or, at least, the right hand practically disappears, which doesn't really make sense, as the left hand is really just accompaniment there. Although he is playing the thirds very fast, he's not going into the keys - creating a bizarre effect. The final descending figuration also sounds like he is just rushing, and the drama is lost. Also, from 9:30 to the coda doesn't make musical sense - it's just like a race, and far too savage - it loses all its passion. Check out Horowitz for that part - breathtaking.
Like I said earlier, probably just a bad day.
Don't get me wrong, I think Richter is one of the handful of very greatest pianists who ever lived - but this particular recording can't really compete with my other favourites - which is really what this topic is about, not how great Richter is. And, sadly, I haven't listened to any of his other recordings of this piece. Ultimately, though, I don't think he was a GREAT Chopin player - he has too much forcefulness, which works well in pretty much everything else BUT Chopin that he played. (Of course, his etude Op 10 No 4 is completely unrivalled.)