Culling original data after cross referencing

First of all, I am trying to create a mesh/polysurface over the top of open geometry. I have a mesh that was used to create the original shape and so have been trying to select the points at the top of all the
geometries.

So I am trying to select all the points on a collection of polygons that are
close to a mesh. I have extracted all the vertices of the mesh and the polygons
and then used distance between points to generate a list of the distances
between points, however as I need to know the distance in relation to all other
points on the mesh it has been cross referenced. I then put it through a
function to determine if distance<2 to receive a boolean list. However when
I go to cull it is incorrect as the boolean list doesn’t match up with the
cross referenced distance list. Is there any way to get this to work, or
another way that would work?

Alternative I have also tried: making lines between the cross referenced
points, measuring the length between them, culling those smaller than 2 and
then extracting the vertices but this gives me the vertices of both ends of the
line which doesn’t really work.