I really like what you guys are working on here and when I get time one of these days to get back to FiveM I will install and test it out.
Above you have asked a few questions about FiveM/lua resources although I’m not sure which questions remain unanswered. For the teleport question I can’t offer much because I have not paid much attention to it, but I do recall resources posted in the forums here which you will no doubt find if you just search the word interiors.
For props, I did once find this resource claiming to be a prop viewer with a massive list of props:
I haven’t tried it. There are probably many basic lists of props such as https://gist.github.com/leonardosnt/53faac01a38fc94505e9 but being able to view them all is another matter. Hopefully that viewer script works or can be made workable.
Earlier you also mentioned trying to implement a cleanup script. Assuming you meant for mission entities, you could look at what ghermans has done in his venemous mode freemode script using decorators to tag and then later clean up mission entities: see the cleanUpEntities() function and related code in the individual missions at https://github.com/FiveM-Scripts/venomous-freemode/tree/master/vf_mtest/missions.
There are probably many useful tips and ideas in that venemous mode script and some of gherman’s previous work collected at the above FiveM-Scripts github site. I am always looking for mission scripts and, apart from MRP-Missions and the above, I have come across only a few other developers who have done this kind of work: scammer’s freemode-remix with assassination and other missions, the PIS script callouts (WIP), as well as this script which may not have finished: https://github.com/Bluethefurry/Fivem-FR.