If you have a look on all the possible combinations that the enneagram is offering it's an almost impossible task to find someone that is exactly like you.
So, on one hand every type is rare but on the other hand rare is always a matter of comparison.
The standard types are 9 in total. In addition you can choose between 2 wings for each type which already gives you 18 types.
Consider the instinctual variants and you got 108 (!).
Lastly, there is an additional option of adding a tritype. Within the 27 tritypes there is again a possibility of 6 different combinations which makes the enneagram much more extensive than MBTI. Much more.