The dataset used in this study is a collection of several protein-ligand systems, some of which have been previously studied by various groups while the others are new. This includes a set of 7 proteins and 128 ligands that were part of our previous large scale study of RBFE calculations 33 : CDK2, cMET, Galectin, JNK1, P38, PDE2 and TYK2. This same set has also been studied using the NEQ approach for ABFEs 31 and its subset using Schrödinger's FEP+ . Further, we include a set of bromodomains studied previously using the EQ approach for ABFEs: (a) bromodomain 1 of BRD4 binding to a set of 8 ligands 19 (referred to as "BRD4-1" in this study), (b) 22 bromodomains binding to a set of 3 different compounds (bromosporine, RVX-OH and RVX-208) amounting to a total of 34 ligand-protein complexes . A subset of the above bromodomain systems were also studied using the NEQ approach for ABFEs . Further, we included three systems that we studied previously using ESMACS for ABFEs and TIES for RBFEs but have not been studied for ABFEs using the alchemical approaches so far: bromodomain 1 of BRD4 binding to 9 different ligands The input structures were obtained from our previous large scale RBFE study along with the Protein Data Bank (PDB) corresponding to PDB IDs drawing on previous studies referred to above.