Kinematic planes for CCs (green circles) and a sample of Galactic Type II Cepheids (TIICs, grey dots). Panel a [Toomgre diagram]: V_T as a function of the sum in quadrature of V_R and V_z. Panel b: V_T as a function of V_R. Panel c [Lindblad diagram]: E as a function of L_z. Panel d: eccentricity as a function of L_Z. Panel e: the square root of J_R as a function of J_φ. Panel f [Action diamond diagram]: (J_Z−J_R)/J_tot versus J_φ/J_tot, where J_tot = |J_φ| + J_R + J_z. Panel g: circularity as a function of eccentricity. Panel h: circularity as a function of Z_max. Panel i: circularity as a function of R_GC.