Distribution of the compact groups with at least three RRab stars in the sky (upper panels) and PM-space (lower panels). Groups found in the Gaia, Z24, and VIVACE samples are shown in the left, middle, and right panels, respectively. Stars in the compact groups are colored according to their heliocentric distances. For easier identification of the groups, their IDs are highlighted in the upper panels, and stars are connected by black lines to a box with their group's ID in the lower panels (the latter is not done for the Gaia groups since all of their stars have very similar PMs). Blue-dashed lines represent the density contours of Sgr dSph stars (in the left panels) and bulge stars (in the middle and right lower panels), while gray crosses represent known GCs. The mean PM error in Gaia are shown in the lower-right corner.