There were about 20 names in the database that I had been unable to categorize. That is, their usage was listed as "?". These names were probably added to the database over 10 years ago when standards were more lax.
When I did the last update I removed these uncategorized names. I may at some point add them again if warranted. Calix was used by 44 boys in the US last year, so it could be categorized as a rare English name.