From your list I like:
Anastasia (nn
Anya)
Anouska (as a nn for Anna/Anastasia only - it's a pet name)
Natalya (prefer sp
Natalia)
Tatiana (nn
Tanya)
Some of my favourite are:
Maria (nn
Masha)
Dusha (means 'soul')
Aleksei Dariya (nn Dasha)
Mikhail (nn
Misha)
Boris (
Borya)
Alexandr (nn
Sasha)
Dmitriy (nn
Dima)
I think Russian names are very beautiful and ... romantic :)
alice x