I made this teleportato kind of API mod.
Tutorial: https://forums.kleientertainment.com/forums/topic/111396-tutorial-adventure-add-your-own-worlds/

You can create your own worlds within your mod and add them to the teleporato mod. That way one of your worlds will be loaded after a worldjump.
Example is my adventure mod: https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1847959350

Feel free to contact me at Klei forum if you have questions how to add your worlds:
https://forums.kleientertainment.com/profile/881349-serpens/