After digging around, I have found the following:
https://developer.valvesoftware.com/wiki/Tf_logic_mann_vs_machine - This entity allows you to mark a map for the MVM gamemode.
The brushes and the other things I have found are below:
func_upgradestation just in front of the station.
phys_ragdollmagnet renamed as "hatch_ragdoll_magnet" for the hatch drop
info_player_teamspawn renamed as "spawnbot" and team set to 'Blue'
func_respawnroom renamed as "respawnroom_offensive" and set to Blue. (Tank) (Tanks run on a path_track)
prop_dynamic with the model robot_hologram.mdl for showing the players the paths the robots will take.
func_respawnroomvisualizer for the dropdown?
prop_dynamic with the model 'mvm_upgrade_sign.mdl' for the rotating sign next to the station.
That is all I could find. I suggest decompiling a few official MVM maps as no other source would be better for learning than the pros themselves. I suggest BSPSource and the map mvm_mannworks. I wish you luck in creating a new MVM map.
P.S. Sorry, if you find italicized words, put a underscore before/after them in the entity objects box and you'll probably find them.
- Thanks x 1