Welcome to FEU!
For Fe9 you’ll wanna go here: [FE9] Character Editor and Randomizer [v1.3.2]
As for Thracia I don’t think there’s a readily available map editor, but a quick search gave me this: [FE5] General Doc, Nightmare Modules
Generally this forum revolves around romhacks for FE8, so the further you drift from the Gba games the harder it will be to find resources.
(As an aside, I’m fairly certain all the tools are in place that you could recreate the entirety of FE5 in the FE8 engine. Not sure if you would want to do that, but it is definitely in reach.)
Make sure you give the search function a try when you have questions, this site has copious amounts of documentation on many FE games.
Enjoy your stay!