So I eventually found quite a few posts saying 3200mhz RAM will work just fine, stating that 2933mhz is the memory speed AMD supports best, paraphrasing, but should still work with 3200Mhz, and decided to buy the following combo:
Ryzen 3200G CPU
+
GIGABYTE B450M DS3H
+
G.SKILL Ripjaws V Series 1x16GB Model 3200C16S-16GVK
Thanks much.