Lol, i ain't the one confused. This comment of yours just further emphasized your lack of knowledge.
First, it's not the "two derivatives of the RIM 174", but the "two derivatives of Aegis combat system" since RIM 174 refers to SM-6 (based on SM-2), that is intended for all non-ABM role of Aegis.
Secondly, you were the one who previously said "the two variants of aegis are both based on the SM-2", not me. I didn't even bothered pointing out your mistake the first time, but the two variants of Aegis are based on two different MISSILES, the one based on SM-3 is for ABM while the other based on SM-2ER is for fleet-wide air defense.
Third mistake of yours, no one claimed the CM-400 to be a "New design", since terminally hyper-sonic long range ASMs have definitely existed before, though I don't know what you would classify as a new design.
Lastly, I have SERIES reservation about your logic as you would consider Kolkata as an Aegis type ship but reluctant to think 52D as such.