Me too.

I would say that Ichigo has the following :
shikai mode - 1st form is the normal one with Zangetsu sword, 2nd form is Getsuga Tenshou.
bankai mode - 1st form is when he fights Byakuya, 2nd form unknown:
No, Ichigo's Shikai has only one form, just like the rest. It is possible that they have multiple abilities though. The same goes for Bankai.