The Copypasta says 'full time'. JG300 and JG301 were built from the ground up as RVG units. JG7 barely qualifies, considering it was originally a Kampfgeschwader, even though the entire time it was converted to the Me262 and bore the Jagdgeschwader name it was RVG.
JV44 was not a full geschwader and I'm pretty sure JG400 operated many too few aircraft to be really considered a geschwader (don't remember though).
JG3 was not a 100% RVG geschwader... I'm pretty sure it was in the BoB and I know it was in Russia for a while.
Many units contributed individual gruppen to RVG duties throughout the war, but I'm pretty sure only JG11, JG300, and JG301 were the only full strength jagdgeschwaders dedicated 100% to RVG through their entire existence.
I don't believe at wars end any of these squadrons were up to full strenght. I know Walter Schuck and from what he told me by 1944 they were lucky to get 10 planes up from his squad at one time. The squadrons I mention were based in Germany and defending it at the end of the war. I don't know if JG 300 and 301 were even at full strenght so I don't understand what your point is.
