1-A treats every layer as an Aleph. Aleph-3 is one layer above Aleph-2 so it's one layer above baseline. Aleph-65 is 63 layers above baseline.
Think of it like a skyscraper with infinite floors, the first floor is 1-A (Aleph-2), the second floor is Aleph-3, etc all the way up the infinitieth floor. Being on the infinitieth floor would make you 1-A+, and being on the infinitieth floor +infinite extra floors would also make you 1-A+.
The thing is no matter how many floors you add, the structure of 1-A+ is limited to the skyscraper. No number of floors will let you escape the limits of the structure they exist within.
To be High 1-A, you arent on a higher floor within the skyscraper, you are outside of it and view it as fiction. Its entire structure which is capable of holding infinities * infinite * infinities of floors will never be able to reach you. This is why it's an inaccessible cardinal, no number of smaller infinities can ever reach it.