we had been one country until 1993, so anything made prior to that is pretty similar... and Skoda was active in loco/train making even after that, making stuff like InterPanter or City Elefant (I believe there used to be even a diesel version of that one)... I believe the last venture by Skoda into pure loco territory was Emil Zatopek loco, aka ZSSK 381 / CD 380 (a couple also made for DB as BR102, which was a big failure for them tho) there are only a couple locos or units that CD has different, like recently they were the first (along with OBB) to receive Vectron 230 locos and Vectrain cab cars (similar to OG RailJet cab cars, but with hood shape and cab controls shaped like in Vectron)... I am not familiar in-depth as to differences in MIREL versions and signalling tho, but should be pretty similar as far as I know
