Rav Elyashiv z”l and Rav Vozner z”l were the most recent Gedolim in our times, they were “fortunate” to see the current sheitels. They knew all the earlier poskim you mentioned, and they even quote them in their writings. Their final psak was לאיסור גמור ומוחלט בלי שום פשרות.”
Whilst I’m not sure about Rav Wosner, Rav Elyashiv NEVER assered any non-Indian Sheitels. Please Stop confusing different issues with diff psakim.
If you do have any written psak – please quote the sources.