Well you can't consider a merge someone closing their clan and a majority of their members joining a certain clan that's just illegitimate. A merge is when two clans that are alive decide that their going to join forces and join one community to try to improve their standing in the Rank list.
PD not merged
VR and DK are a legit merge because both clans were alive when the connection between communities happened.
UNK,RUIN and EVO all joined CT after their respective clans closed so this isn't considered a merge but a mass join.
Turmoil is a rune pure clan, you cant merge a rune pure clan with a main clan. Not to mention Turmoil was mostly comprised of Jaja members when it first opened. Lets be honest you cant merge a dead clan with a live one so SV+Jaja isn't considered a merge because one clan has no members technically not long ago so this is invalid as well.
So if i'm not mistaken besides VR+DK there hasn't been a legit merge since Exodus-Ronin merged a few years ago.