This is a link for a general search for the Goddess Gaia, there are a few different spellings of her name as there are with all Gods and Goddesses.
Gaia’s image has been depicted in many ways through different cultures so explorer the images until one jumps out at you like your idea of what she may look like.
When I am asked what kind of Witch I am, first let me say I really do not like to label anyone as one type of Witch or another because to me that is narrow-minded thinking, but my answer is, “I’m an Earth Witch.” Because I work a lot with Gaia in her form as Mother Earth and the Triple Goddess. I can feel her wax and wane during the seasons of the year and my spirit, mind, and body flow along with her. I suppose in Neo-Pagan terms, I am an Eclectic Witch.
I also work with the Moon Goddess Luna or The Triple Goddess depending on what I am doing and when. I just never think or picture Luna as a Crone. The reason I work with her is she and Gaia work in a beautiful dance of harmony to help all living beings on this planet to live.
As for Gods, my main go to for many things is Ra especially if I am doing a spell and/or ritual during the day. He also works in harmony with Luna and Gaia to keep the planet we live on not to hot or cold and offers us his light. His light and warmth are very important during the growing seasons to help ensure a bountiful harvest. Whichever name for the Sun God you prefer is fine.
From Gaia, Ra, and Luna the elements of Air, Water, Fire, Earth, and Spirit are possible.
The above mentioned Gods and Goddesses are who I prefer to work with. Each person needs to find the deity or deities they find it easiest to work with most of the time. There are times to branch out to different ones that may help with a specific spell and/or ritual. Example when I doing healing work I call upon Kwan Yin (oriental Goddess) and Sirona (Celtic Goddess) to work through me to help whoever I am sending healing to.