Abstract: The invention provides methods to obtain panels of low molecular weight polymers resulting from varying constituent monomers, which panels are systematically diverse with respect to two or more variables. The panels can be screened for members (paralogs) which are capable of specifically binding a target moiety. Such paralogs are useful for chromatographic separations and purifications of desired analytes and in binding assays, such as immunoassays, involving said analytes, as well as for any purpose which requires said specific binding. The invention also provides kits for these determinations, and methods to synthesize panels of candidate paralogs and use of these panels to generate analyte profiles and cross reactivity matrices.