Adonis tells his daughter that he used a straight right hand to knock Danny "Stuntman" Wheeler out in 'Creed II.' The punch was actually a left hook.
At the end of the movie a battered Adonis goes to see Dame in the locker room where he struggles to sit from the damage sustained (which almost ended the match). He then goes to see and play with Amara, falling over and picking her up (on the same side as the injury) without any discomfort.
In Creed 2, Amara Creed's birth occurs during the events of the film which took place in 2018. Meanwhile Creed 3 taking place in 2022 has Amara being portrayed as a preteen even though she would have to be a 4 year old toddler.
In the beginning, Donnie takes twenty-dollar bills out of an envelope. However, the portrait on the bills is of Benjamin Franklin, not Andrew Jackson, as it should be. The serial number, starting with "F," does not match the "D" Federal Reserve Bank Designation. The signatures on the bill also do not match any of those on any modern currency.
Adonis visits his mother in her room as she is being treated. No IVs, oxygen, or hospital equipment is seen in the room.
In the opening flashback set in 2002, a 'Naruto' banner/poster can be seen in Adonis's room. It's highly unlikely he would have seen or read 'Naruto' seeing as the manga came out in English in 2003 and the Anime wasn't released in English until 2005. On top of that, the poster is from Naruto: Shippuden (2007) which aired from 2007 onward.
In the opening scene set in 2002, a Perfect Grade Gundam Astray Red Frame model kit is seen in young Adonis' bedroom. The Gundam Astray Red Frame did not debut in any media until 2003 while that particular model kit was not released until 2009.