Downtown buildings guide (FIB, Maze Bank, etc) from 10K object list for Map Editor
Tried my best to go through the object list here https://www.gta5-mods.com/tools/object-list-10k and find only the main Downtown area buildings for easy access to those who just want to mess around spawning the main buildings from that area and need quick access to them.
Obviously you need Map Editor, and also Object Spawn Unlocker for this to work, and just append this list to your existing ObjectList.ini or to an empty one. There's no need to validate in Map Editor you just have to be in the downtown area for these to all spawn and not give you Invalid message instead, best way to ensure everything spawns from the list is to go to the plaza of the Maze Bank building in map editor and begin prop spawn there.
Spawning these in the downtown area is easy but if you want to spawn them someplace else and have them stay there its a bit trickier, you need to stay in the downtown area to spawn a building from there and then you can go back to where you are placing it, but you can copy a building placed outside of the downtown area via current entities menu and if you prop spawn it or one before/after will sometimes work as well but if it suddenly gives you Invalid message then just go to downtown, spawn from there and go back.
Also if you place these outside of the downtown area, and save the map, you have to first enter the downtown area to properly load them all again the next time, even if they are not located in downtown, that way you avoid having multiple "unknown props" clogging the current entities list, and they'll actually spawn.
Heres the list, sucks theres no collision on any of these props, but these are still good for scenery/messing around with the look of the city. Its good advice to save often when working with these huge building props, I've had several CTD's and map editor sometimes stopped working and I had to restart, couldn't save my current map changes, the props can be very unstable sometimes.
Hope this helps if someone just needs a list of all the downtown buildings or help in how to spawn them and load them properly. The fact that you have to be in the local area of the group of buildings you want to spawn props from is a real pain in the ass, obviously dt is downtown but I don't know what all the other ones are, but usually most of the building props in the game follow this name scheme (xx)_(#)_build1,2,3 etc