Here’s plug for a collection of EM papers from about three years ago
The Extended Mind by Mark Rowlands
Persons and the Extended-Mind Thesis by Lynne Rudder Baker
Minds, Intrinsic Properties, and Madhyamaka Buddhism by Teed Rockwell
Empathy and the Extended Mind by Joel W. Krueger
Quintuple Extension: Mind, Body, Humanism, Religion, Secularism by Leonard Angel
Constructing Religion without The Social: Durkheim, Latour, and Extended Cognition by Matthew Day