My blueberry successes were Leonardo (Blueberry Cookies S1) from Irie Genetics. It produced strong, fake blueberry aroma like the drier sheets people inexplicably use to make their clothes smell weird. But even better was Blueberry Muffin from Humboldt Seed Co. This legit smells like a blueberry muffin in mid flower and when I've grown and harvested well it was distinctly like a blueberry muffin in joint flavor. Neither companies sell these varieties, but they sell offshoots. I made S1 seeds of both in relatively small quantities and share for free. The Blueberry Muffin I still have and can make more.
I tried a Blueberry from one of the Dutch seed companies a long time ago that claimed to be from DJ Short. They were all hermie runts and I struggled through pulling male flowers just to get a little taste of maybe blueberry aroma. Waste of time.
I also tried Riot's Blueberry IX, just one seed so far, but it sucked so bad I can't imagine popping any more of that overpriced BS until someone else says they found success in this line. It was weak as shit, no flavor, but at least it wasn't a hermie and although small and slow growing it wasn't a runt.