Ha, my DH has many, many prejudices and rules about naming children!
He thinks 'flower' names for girls are weird and wrong. So Lily, Rose, Poppy etc, he doesn't think are proper names for a person. I think Heather is ok, as it is more Scottish. 
He also doesn't like names that are commonly used as surnames. Eg Fraser, Murray.
More than one middle name is 'pretentious'.
If it's not a traditional Scottish name, it's 'a bit too posh'.
With every birth announcement from our friends, I will tell him the name and wait for his reaction. It's almost always disparaging!
But it's his nature to be deeply suspicious of anything new. If I get something new for the house, or even new clothing, he will humph and give it the side-eye for about a fortnight, then tell me how lovely it is.
We already have acceptable names picked out for DC4 due this September, as the thought of naming negotiations while very hormonal was unthinkable.