Ah the link you posted is for ‘flying co’ which is the VS business loyalty scheme which has different rules to the normal scheme.
Yes a DL G matches to a VS K but there are issues with getting the miles and tier points posted sometimes as on VS a G is an UC reward. There are threads on the DL board about tha that.
id also be wary of booking this via the DL website as even if you got the VS codeshare number you can’t use VS miles to uograde a DL issued ticket. There has been talk about that changing but I’m not sure if Andrew when that’s due to happen.