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Only the holographic strip is Nanocrypt®?
the holo at the top right corner (the one that a mountain is printed on top) is a "normal" holo, correct?
Correct, the strip is Nanocrypt® by Advast Suisse. The one on the top right is produced by the STC banknote company.
Henche why we call our non Polymer security paper "STC".
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If you are interested in high security holograms, most holograms are made by KURZ:
https://www.leonhard-kurz.com/security/---
It is our mission to bring as many banknote related security features to crypto. Hence why every mystery note is a leap forward in this goal.