User blog:Anon3610/Witty Toys v. Giochi Preziosi. v. Simba. v. Smoby - Anyone Know the Difference?

Recently, I've been creating articles for doll lines and I'm having a very difficult time making the distinction between a few lines, specifically Witty and Giochi Preziosi. Apparently, they're the same thing, or related somehow. I can tell a Giochi Preziosi doll S1 - S2, but it's with the "My Fairy Friend" line and the newer lines that it gets hazy. Sometimes, what I think is Witty Toys has a Giochi Preziosi logo, or it comes up a certain company when I thought it was another.

Don't even get me started on adding Smoby and Simba to the mix. I can't figure it out between two brands, let alone four. Can someone more experienced with Winx dolls than I help me out?