Some spirit guides have been with you for your entire life, even since before you were born. Others came on your team as you needed them at different times in your life, and you can use your free will to request more spirit guides still.
Your particular spiritual guidance squad, the team of spirit guides assigned to you, could include any or all of the following
Archangels are leaders in the angel world and have a powerful, very large energy signature. If you're an empath or are sensitive to energy, when you call on an archangel you might feel an energy shift in the room. Each archangel has a specialty, like Archangel Raphael's specialty of healing, and can work with countless humans at once.
Spirit animals might be a pet you once had who passed away and is now part of your spiritual guidance squad. Spirit animals can also be any animal that has something to teach you, like the peacock teaching you the importance of beauty or confidently owning your gifts, or the wolf showing you the importance of getting your survival needs met.
Spirit animals could show up for the first time in a dream, in your backyard, or on your co-worker's coffee mug.
Ascended masters like Buddha or Mother Mary were once human, living journeys of deep spiritual growth and influence. Now they have a special place as leaders in the spirit world and as guides/teachers to humans like you.
My guides have told me that all ascended masters are partners and work together in harmony, no matter what culture or religion they were part of when they were alive.
Departed loved ones
Loved ones or family members who've passed on may choose to be one of your spirit guides and actively support you from heaven by helping you in very practical ways, like sending career opportunities or nurturing relationships your way.
One of your grandmothers could be an important spirit guide for you, whether you knew her well in life or not.
In fact, any human who has passed on might become a spirit guide for you. If you're a dancer, you could have a spirit guide on your team who was once a dancer and performer too and now wants to help guide and inspire you as an artist.
Helper angels are "freelance angels," so to speak, who are just looking for humans to help with specific situations, like finding new friends or finding a new office space.