Afaik Dogecoin, although there was for a while a pool with more than 50% hash rate, was not attacked. The pool played fair.
And afaik that was the reason it implemented merged mining with Litecoin. After that the hash rate went up and got splitted between much more pools and there were no more problems.

So if an attack means that funds are stolen, maybe the "except" list can be much bigger.


Also I don't think that Monero ever had 51% attack problems either...