As part of the February 2022 GADSL update in CDX the following substance groups have been established to help users filter and find the various categories of PFAS substances in addition to the PFOA substance group already existed before:

Per and Poly- fluoroalkyl substances (PFAS)
PFDA, salts and related compounds
PFBS, salts and related compounds
PFNA, salts and related compounds
PFHxA, salts and related compounds
PFCAs, salts and related compounds
PFOS, salts and related compounds
PFHxS, salts and related compounds