Crucial 32GB (2PK 16GB) 3200MHz speed PC4-25600 DDR4 SODIMM Laptop Memory Kit Green CT2K16G4SFRA32A - Best Buy
OWC 32GB (2 x 16GB) PC21300 DDR4 2666MHz SO-DIMMs Memory, Compatible with Mac Mini 2018, iMac 2019 and up, and Compatible PCs, (OWC2666DDR4S32P) at Amazon.com
Samsung 32GB DDR4 2666MHz RAM Memory Module for Laptop Computers (260 Pin SODIMM, 1.2V) M471A4G43MB1 at Amazon.com