I doubt that the factory fill was mineral. If you are interested, Shell Advance Ultra 10w-40 is available on Amazon, but is very expensive.
Why do you doubt the DUCATI factory fill is a mineral oil?
I see no reason to think DUCATI would have anything "other" than a mineral oil as a factory fill.
I personally see no legitimate reason why they would want to use a synthetic oil as a factory fill.
The main reasons are as follows.
1) It's only intended to be in the machine for 1000 kms then changed at the first service @ 1000 kms or 12months whichever occurs first. If it's overdue for it's first service, I would doubt it would ultimately go much beyond 1600 kms before it was changed, and a mineral oil would suffice.
2) It's more cost effective for them to use a Group II oil as a factory fill.
3) A mineral oil is totally suitable, and fit for purpose under the recommended Break-in operating conditions.
DUCATI states the following in the current Owners Manuals.
(Maximum 5000 rpm for the first 1000 kms. Maximum 6000 rpm for the following 1500 kms.)