TikZ: collecting defined coordinates in a list

Question

I want to collect previously defined coordinates in a list and print them later in a \foreach-loop for debugging purposes.

The following MWE shows the list \points which ideally should be defined and collected by some TeX/TikZ mechanism:

\documentclass[tikz]{standalone}
\begin{document}
  \begin{tikzpicture}
\coordinate (A)  at (0,0);
\coordinate (B)  at (1,1);

\def\points{A,B}% <--- how to automate?

\foreach \point in \points
  \fill (\point) circle (0.1) node[above] {(\point)};


\end{tikzpicture}
\end{document}

Is there a package or a macro available for such a task?

I am grateful for any advice!