There are? (Hops a bus to the City to check it out.) I don't know how those icons got there.
But they're not new. I did all of those a couple to several years ago. They use to be on my site, back when I included derivative works. The gnoll and hill giant still are on the site b/c they're original (the cloud giant is too, I just don't like it).
The answer to the unasked question is Icewind Dale.
Seriously, though, I didn't intend to put them in, I just forgot to delete them, as I did the other monster icons (b/c the file names begin with 'icon_' instead of 'cm_' I missed them).