Apple should just skip 17 and 18 and call it iPhone 19 so it will be using the same number like in A19 and A19 Pro...
The only time that the name and SoC of the iPhone used the same number was back in iPhone 4 and A4... It was rumored that the 5th release was going to be called iPhone 5 but Apple called it iPhone 4s instead...
If there is ever a time to bring back naming consistency, then it should be the 2025 lineup...