I'd say a silly name (one needing intervention if I were incharge of names) would be something offensive like calling a child hitler or fucker. My child has a questionable name when it comes to unusual names, he is called Elvin which means elf friend, we call him elfie. I can see that his name is unusual but I don't think it is offensive.
Elvis is allowed in Sweden, there are 1743 men called elvis in sweden (that is lots for a small population)
my son's middle name was not on the list (we live in sweden) the name is brian which is my grandpa's name. They checked that it was an actual name and that it didn't mean anything rude and we were allowed to choose an "off list" name.
In sweden the list has stopped people making up the spelling of names like "our daughter is going to be called bryoknee because we want something unique" I think that is a good thing, there is no need to spell names in random ways just to try and be unique I think it would just give the child a lifetime of correcting people.
I find that incredible - that the government would impose a restriction (based on whose taste exactly?) for something like spelling. If I want to spell or pronounce my child's name a certain way, that is my right and privilege. Some bureaucrat who doesn't like or agree with my choice should have absolutely no say in the matter. No matter how pretentious or obnoxious anyone thinks it is.