Thank you for the opportunity to help you with your question!
The most common form was a man with the head of a hawk and a solar disk on top and a coiled serpent around the disk. Other common forms are a man with the head of a beetle (in his form as Khepri), or a man with the head of a ram. Ra was also pictured as a full-bodied ram, beetle, phoenix, cat,heron, serpent, bull, or lion, among others.
Please let me know if you need any clarification. I'm always happy to answer your questions.