All the cups I would recommend if you are transitioning your baby to a sippy cup. All of these will be mostly (maybe a couple of drops) spill proof if not fully spill proof!
These are the best sippy cups and at a good price point. I have never had a problem with them leaking
Parents Choice Parent`s Choice Soft Spout Sippy Cup
Great transition cup and you get 2 in a pack
Tommee Tippee Insulated Sportee Toddler Water Bottle with Handle, Girl — 12m+, 2ct
Doesn't spill, great transition cup and again comes with 2 cups