This is a simple datapack that re-adds some naturally spawned structures from the Spore mod - BUT it attempts to naturally blend them into the environment with natural blocks and structure voids - which the default mod structures does not really attempt to do. Includes the relevant natural Spore spawns per structure as well.
Please note that this does NOT add all of the different types of the same structures unless the changes are massive (e.g. hospital vs insane asylum both spawn, but only 1 type of the church spawns).
If using this mod, I highly recommend using something like Structurify by Faboslav to disable the default mod structures and allows a lot more functionality as well.

