I've only had the full USB-A style ones. Every device I've had that I've needed a yubikey with has either a USB-A or supported NFC. The >1 decade device is a Yubikey NEO, I recently got a Yubikey 5 USB-A variant and also have one of those FIDO-only blue Security keys in USB-A.

What kind of failures did you have for the nanos? They just became unresponsive? Did they suffer any obvious physical failure or any particular kind of event cause their failure?