Thank you MR for confirming that the new email categorization is exclusive for iPhone 15 Pro, 16, and 16 Pro, alongside with M-powered iPads and the latest iPad mini. I thought this feature could be handed to most Apple devices with a 16core neural engine but apparently, the 8GB of RAM are necessary for this feature.
Now, what would be really interesting, is assigning default apps to different types of documents (pdf, epub, docx…) especially on iPad. But apparently the new default apps section is restricted to iPhone.
Fresh install of iOS 18.2 on an iPhone 13-Mini: