The only thing your sources demonstrate is that he went by the nickname "Barry" until his second year of college. Wow. Stop the presses. This is such old news, it's growing mold. Have you been living in a cave? It's not like this is anything he's been hiding. He admited this, and it's been reported countless times in the MSM for something like two years.
There's no indication in any of you links that he ever sent by Sotero. The mere fact that his friends called him Barry at one point doesn't prove he ever went by Sotero.
Obama derangement syndrome strikes again.