Here’s a low poly Free Hand Topology Model by Marc Brunet. He is the founder of Cubebrush, with a great topology that will help you save a ton of time. The hand model is optimized for animation and deformation includes UVs.
low poly Free Hand Topology Model 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 not for any commercial usage.