All the horcruxes are as follows:
- Tom Riddle's Diary
- Marvolo Gaunt's Ring
- Salazar Slytherin's Locket
- Helga Hufflepuff's Cup
- Rowena Ravenclaw's Diadem
- Nagini
- Harry Potter
My question is though why there aren't more horcruxes? 8 to be exact. When we see Slughorn's memory, we see that Voldemort was planning on not making 1, but 7 horcruxes. However, he only made 6, and Harry was an unintended horcrux making 7.
What happened here? We even know that Voldemort wanted 7 because it was the most magically powerful number, so it would stand to reason he makes 7 horcruxes, then Harry is an unintended 8th.