Just like with stock market, where past performance doesn't guarantee future returns, prior approvals / acceptance by USCIS doesn't guarantee prior decisions wouldn't be reviewed. The reason USCIS has multiple petitions required along the way and multiple interviews, is to catch fraud and its own errors. Any prior decision by USCIS technically can be revisited and overturned at next stage of immigration process.
Again, I don't doubt your prior cases were adjudicated correctly. Just saying, anything can be scrutinized, even if it was OK in the past.
Do I think you'll have issues? Probably not. Maybe 5% chance of them asking for additional proof of US citizenship.
Good luck!