Indeed! What’s interesting, though, is that you have submitted to an authority outside of Scripture to determine what’s essential. It is the Church–that is, the Catholic Church–that has told you what’s essential. Not Scripture.
Thus, there are at least 2 things gleaned just from this thread, that you believe that’s not listed in Scripture:
-the canon of Scripture. Remember, no Sacred Tradition, no Sacred Scripture, for you would not know that, say, Revelations is inspired but the Didache is not, were it not for the authority of the CC.
-the list of “essentials”–the CC has given that to you, too!