Good question, and one where the Amflow's frame design actually matters quite a bit.
For the front, the
Mudhugger FRP is the most popular choice in the community and fits most fork lowers without faff. If you're running a Fox 38, the
Fox 38/36 Direct Mount XL fender is a clean OEM-style option that mounts neatly without zip ties and velcro everywhere. The
Crud XL Fender also gets used and works fine.
For the rear, worth knowing that
@DirkWisely flagged the Amflow has a
spring-loaded charge port hatch which makes running a range extender cable impractical — not directly a fender issue, but worth knowing the frame has some packaging quirks. A standard
Mudhugger Large or
SKS Mudrocker fits most full-suspension frames in this travel class.
@irie found the
Mudhugger Large keeps significantly more muck off than the SKS if back protection matters to you.
Also confirmed: the DJI rear motor sensor has
adequate clearance for 220mm discs, so nothing unusual to worry about there when fitting a rear mudguard.