Tink, lotus come in different sizes. Small, medium, large and dwarf or Chinese bowl.
Most of what I have are Chinese bowl as I like the small ones.
Your Russian Red is a caspicium. Provenance on that, it came from mouth of Volga
River in Russia. I think Walter Pagels brought seeds back with him from a trip there,
years ago.
Baby doll would be considered small lotus.
Ones like Bangkok, Shiroman, Dairenien, caspiciuim -- those are considered large.
Ms. Perry Slocum is considered medium.
Of course, lots of size depends on size of pot, is it in warm weather, in full sun and
of course fertilizer.
May I say that yours are extremely healthy looking, lush and green.
If you want small, you need some of my Chinese bowl. I even have one that is dwarf
Chinese bowl -- might get 12" high, that's all. Next spring, we'll fix you and small lotuses!!
Marie