Classification of OPARGs (left) and OPIRGs (right) into radio morphological types according to the ROGUE I and II catalogues. FRI stands for Fanaroff & Riley (1974, FR) type I, FRII for FR type II, FR for FR types I, II and I/II, ext for all extended types (FR, OI, OII, Z, X, DD, WAT, NAT and HT), C for compact, and E for elongated (see Kozieł-Wierzbowska et al. 2020 for details on the radio morphologies). ‘Possible’ classifications are in a darker colour to contrast with ‘secure’ classifications.