I have to see your function order again.
If I remember correctly you presented two sets of function order that showed a very interesting pattern.
There are diverse models of function order. People do not tend to ascribe perfectly to any of the models.
If you are happy with the INFJ description then you are an INFJ. It means you fit the INFJ model type pattern closest (of the 16 model type patterns).
If I remember correctly you showed in your cognitive processes test result an INFP pattern and as well an INTP pattern. It does not mean you are not an INFJ.
It only shows you are adept at using a handful of diverse cognitive processes mechanisms.
This is evident not only in the tests you took but also in your posts.
There is no paradox.
You have a highly developed Ti Ne. It is not in the tertiary department.