Do extraterrestrial Reptilians and Arcturians also send their discarnate spirits here, like the Anunnaki do?

They do not send spirits here. This is done solely by the Anunnaki, so you have the complete picture. As represented in your Lightworker Healing Protocol, there are no missing actors, no missing pieces. The so-called Insectalins are minor players here and need not be of concern. They are along for the ride, so to speak, and are not a major player.