Just updated my ASRock Z690 PG Velocita to the latest bios as of today (I think it supports 14th gen CPUs as well) - 18.05 and can confirm that bclk OC for non-K CPUs setting is till there and works.
I recently bought this board because I wanted to switch to DDR5 and wanted the versatility between having the BCLK OC for non-K CPUs and Z690 chipset so that in future I could OC a K CPU as well. Found it pretty cheap on newegg for less than $200.
I will keep my ASRock B660M PG Riptide for my other PC.