Create one dataset from three

I think you are looking for the AnchoredSnapper.

Can there be multiple points of a/b/c in one meter radius? Because then it could get tricky to get the correct three points

Otherwise you can also extract, expose, rename the coordinates of each point, buffer and dissolve them, remove geometry and then create a vertex according to your ranking (conditional value)

I used the AnchoredSnapper, what I did was the following. First I used the most accurate dataset (B) as a anchor and the second (A) most accurate as the candidate. Then I used another AnchoredSnapper where I used the most accurate (A) and the unsnapped as anchor. And the least accurate data (C) as the candidate. Then I repeated the previous steps and I think it works! Thanks!

Can you explain this further for me? What do you mean with rename the coordinates? Like dataset_A_X and dataset_B_Y? And how do I create a vertex? Like if dataset_B_X and Y are present create a vertex? Thanks!

Yes, exactly. You can use an coordinate extractor to get the coordinates and then an attribute exposer to show them as attributes, which you then rename according to the dataset, so once you merge/snap/whatever you know for each feature the original A,B,C coordinates.

A VertexCreator can be used to create new points:

But I’m glad the suggested anchoredsnapper worked for you.