Comparison of Arches and Quintuplet clusters based on algorithm settings. In the top row, we present the members of the Arches and Quintuplet clusters according to Hosek et al. (2022). The blue points indicate stars with a likelihood ≥ 0.7 of belonging to the respective clusters, as determined in the aforementioned study. The red circles represent the half-light radii for each cluster, as found in the literature (Hosek et al. 2015; Rui et al. 2019). The left columns display the vector-point diagram, the middle columns show the stellar positions, and the right columns display the CMD. In the bottom row, we present the Arches and Quintuplet clusters as recovered by the algorithm when configured to search only in 2D space formed by the proper motion components. With this configuration, 75% of the stars labeled as Arches members match those of Hosek et al. (2022), and 85% in the case of Quintuplet cluster.