Learn how to assign different materials or switch multiple textures per particle in Unreal Engine 5.4 Niagara! In this step-by-step tutorial, we cover two distinct techniques: using Render Visibility Tags to alternate multiple materials across particles, and setting up Dynamic Parameters with Switch nodes inside a single material to randomize textures (like butterflies) efficiently. 
https://dev.epicgames.com/community/learning/tutorials/9m8B5/different-material-for-each-particle-in-unreal-engine-5-4-niagara-tutorial-a-step-by-step-guide