Thoughts on iconostasis

Hey I don’t know what they are called, but I see in Ruthenian and Ukrainian churches you’ll see iconostasis that are see through or holes in them while orthodox churches are generally solid. Thoughts on these compare to the more solid ones found in orthodox snd certain Catholic Churches. Where was the origin of these.

Idk but me personally I’ve always found the solid iconostasis to be more beautiful, especially the annunciation Ruthenian church in Chicago. But I’ve seen many beautiful iconostasis like st Anne Ruthenian Catholic Church in California and my parish holy angels San Diego.