VW 502.00 does not preclude low (or mid) SAPS and and any oil with a combined VW 502.00 / 505.01 approval must be low SAPS / C3 as that is a requirement of the VW 505.01. I agree that the majority of VW 502.00 oils are full SAPS ACEA A3/B4 but there are quite a few low SAPS oils that meet ACEA C3; examples that I've used in the past are Fuchs GT1 Proflex 5W-30, Total Quartz Ineo MC3 5W-30 and Valvoline Synpower MST 5W-30.
There is something a bit odd with the latest VW approved list from March 2020. There are now three separate approval lists for combinations of 502.00 / 505.00 / 505.01 as below. (original file names from VW used). And some of the oils that were previously VW 502.00 approved, like the ones I stated above, are now only in the 505.00 / 505.01 list.