hello99: “Additionally, not wearing tefillin CHM is not only based on Kabbala. It is the opinion of the Tosafos, Raavad and Rashba predating the popularity of Kabbala, and the Teshuvos HaRashba testifies that the minhag was NOT to wear tefillin CHM, not like the Beis Yosef’s uncle. “
The Ritva says to wear tefillin chol hamoed, as does the Meiri, Rosh, Ohr Zarua, Maharam miRotenberg, and Smak.