Hi Shiro Tak, I can help you with two of these.
You are correct, the penguin is V Nason, and the bird is Riejmyre Glass from Sweden.
Sorry I can't help with the swan.
If you have other pieces that you need help with, it is best to add them on here one at a time so that each can be dealt with individually.
Also, it does help a lot to have a base picture for each of them.
Rosie.