Yes, I think they exist.
BUT ...
as a good teacher, you need a quite good understanding of the material which you teach.
Which results that you usually are at least in that part not bad neither.
Given, that the vast majority of the dancers on local level have basically no clue, what they are doing - aside from trying to copy other people - everyone, having that clue, will stick out from the masses already.
While the actual ability in executing isn't that important and skills way above what you are teaching, is simply futile.
It is very important as a teacher to be able to motivate, to communicate, to explain the material adjusted to the students, to understand the students and, last but not least, to care for them. Didactics are far more important than fancy dancing skills - just that the marketing machine inverted this.