He's not Lore and he's not B-4. He's Data 2.0. The second version of a character we've seen before.
Calling it now.
After the ban on AI was lifted, someone in the Federation started working on creating a new Data and used whatever could be retrieved from the old Data: records, backups, interactions/activities, you name it.
They're already trying to do something like that IRL where they think they'll be able to create a digital facsimile of a person one day. The only difference with Data 2.0 is that they'll be able to put the digital facsimile into a new body. It'll be one way to have Picard and Data have something in common. The only difference being: Picard is syntho-organic while Data 2.0 will be just synthetic.