Harry says that he's sorry. He holds grudges against people who wanted to sell him out to VOLDEMORT. But, I'm sure he wouldn't just sneer at her at public events, for her husband's sake.
I'd assume that he and Drew probably get on well, especially with how much Harry loves Teddy.
Ric is dead to him and he will judge him at the hardest and highest of ranks.
I think that Viktor and Harry have probably chatted, but aren't super close.