Garry Kasparov on the most likely next challenger to Magnus Carlsen

Garry Kasparov joined the podcast host Tyler Cowen for the latter’s program/podcast called Conversations with Tyler. In that episode, Kasparov discussed his views and opinions about AI (Artificial Intelligence), chess, and the future of creativity.
Towards the end of the interview, Cowen asked Kasparov who he thinks will be the most likely next challenger to the World Champion, Magnus Carlsen.
Kasparov ranked them in the following order:
Excerpt of that follows: