Need help! Do I need to bake my 3D meshes as a texture Atlas?

I'm currently learning game dev and have started creating house textures in blender with modular walls. My wall textures are a flat plane with white paint color, and five rectangular beams rotated in different ways with their own texture material under the hood. What I'm curious of is, am I supposed to create a texture atlas and bake that to later use that downstream in unreal engine, or should I be just including the straight up 3D static mesh textures for each of those beams and the wall itself? Some people it seems use the texture atlas approach, baking the entire thing into a texture atlas that can be used with the full PBR like the height map, displacement, normal map etc. Curious what you think