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
A-Tech 64GB Kit (2x32GB) RAM for Apple iMac & Mac Mini (2018, 2019 & 2020) | DDR4 2666 MHz SODIMM PC4-21300 / PC4-21333 260-Pin SO-DIMM Memory Upgrade at Amazon.com
8GB DDR4 2666 2667 MHz SODIMM Mac Memory RAM for APPLE iMac 2019 5K Retina A2115 | eBay
Original8GB RAM DDR4 PC4-2666V-Laptop-Notebook-M471A1K43CB1-CTD for Laptop Memoria DRAM Original Stick 8G 2667mhz for Notebook 100% Original | Lazada PH