RFC 52 is open for nominations, please bring forward nominations (might include yourself) on the GitHub PR.
Quoting RFC #36 for the responsibilities of the shepherd team:
A team of 3-4 community members defined unanimously by the RFC Steering Committee, responsible for accepting or rejecting a specific RFC. This team is created per RFC from community members nominated in the discussion on that RFC.
This team should be people who are very familiar with the main components touched by the RFC. The author cannot be part of the Shepherd Team. In addition, at most half of the Shepherd Team can be part of the RFC Steering Committee.
The responsibility of the team is to guide the discussion as long as it is constructive, new points are brought up and the RFC is iterated on and from time to time summarise the current state of discussion. If this is the case no longer, then the Shepherd Team shall step in with a motion for FCP.
The person in charge of the RFC process for a specific RFC, and responsible for ensuring the process is followed in a timely fashion. The Shepherd Leader has no special responsibility with regard to moving an undecided Shepherd Team to a certain decision.