I recently implemented a plugin for loading 3D-meshes during runtime as well as the corresponding textures for my game. It is built upon the RuntimeMeshLoader plugin, which, however, seems to be abandoned and does not work anymore with current Unreal Engine versions. Therefore, I thought, the community might be interested in such a plugin as well.
It is open-source and free under the MIT-license and includes an example map introducing the inteded use of it.
It relies on the Assimp version 5 tool for most of the import stuff.
Let me know if you are interested in it and, if yes, how you like it. If interest is high, I might consider publishing it as a free Plugin in the Unreal Marketplace.
Now also tested for UE5 (Early Access)!!