in germany only group 4 and 5 base oils are called synthetic, the liqui moly products we get in pak have same germany packaging so synthoil is fully synthetic group 4 PAO, rest are teilsynthetische or semi synthetic a mix of group 1,2,3 and 4. synthetic technology is hydrocracked group 3.
when you look at amazon etc most oils will be synthetic as usa does not require oil to be group 4 PAO or group 5 ester.
if you want to compare liqui moly oils use their product code.