My source from researching the last time this battery was discussed.Click on the first NCR (it's the only one that talks about what's in it) and it doesn't mention anything but Li-ion.
Rechargeable Lithium Ion OEM Batteries - Panasonic
All the manganese they list are coins. I thought "hybrid" meant that it acted like "safer chemistry" not that it's an actual blend. Just like some people call them "protected" because they do have protection but it's not the type of low drain limiting protection one normally thinks of.
Orbtronic - Panasonic CGR18650CH With Top Button, 2250mAh IMR High Drain 18650 Battery Cell-Made in Japan