Totally New Animated Raindrops is awsome material made in Substance Designer, with amazing features such as streaks, drops, fast streaks and slowly falling drops. 100% Procedural. Grab it from here: https://gum.co/JzqxHG
You can get it with SBSAR and SBS Substance files, and exported Sequence Textures(Roughness, NormalMap, Height, Mask), and Sprite Sheet.
Folow me on Gumroad: https://gumroad.com/sommerlukasz/follow
New Animated Procedural Raindrops
Sprite Sheet in Unreal