Here’s a low poly hand model by Marc Brunet, the founder of Cubebrush, with a great topology that will help you save a ton of time.
It’s said to be optimized with animation and deformation in mind and includes UVs.
The pack has been praised by animation leads from Blur Studios, Weta, EA DICE, Ubisoft. Animators and riggers love it, so what more do you need? The model is said to come as an OBJ so no textures or colors in this case.
The pack is free for personal use.