Open clusters (blue dots) harboring classical Cepheids (red hexagram). The columns of each panel represent the distributions of the member stars of OCs and classical Cepheids for position in RA (α) and Dec (δ), proper motions in µ_α* and µ_δ, and the CMD in G vs. G_BP – G_RP, as well as the mean parallax and total proper-motion dispersion of OCs. Here, the listed OCs are Alessi 95, FSR 0951, vdBergh 1, OC-0717, UBC 229, UBC 1424, Ruprecht 79, NGC 5662, NGC 6067, NGC 6087, OC-0675, and IC 4725.