I authored a response on behalf of my wife for a religious exemption for multiple workplaces. She is an oncology nurse at a hospital/health system (regarded as top in the US), university lecturer/teacher (largest student body in the US), and community college lecturer/teacher. All successful.

Personally, felt that it would be best to stay away from Judeo-Christian belief systems, as thy are too common and hard to defend when their leaders endorse the jab or when teachings (outside very orthodox application) do not support adversion, uniformly. It's uniqueness made it believable and supports exemption requirements. Shinto/Shintoism.

I answered the stock questions for each employer with a brief narrative. Only he university requested a follow up, here was that reply:

"What is the religious basis in Shintosim that prohibits the COVID-19 vaccination specifically?"

Answer:

"Thank you for your interest into a deeper understanding of Shinto. However, there is no centralized doctrine, sacred scripture/text, or fixed dogma in its practice. Shintoism’s guiding principles are in the natural state of purity of human beings and the essence of spirit present in all things (nature).

Illness occurs when one’s immune system is weakened due to impurities of the spirit, mind, and body thereby creating imbalance. Preventing and overcoming illness involves returning that balance through physical and mental purification. Such remedies include naturopathy, kampo, diet, meditation, prayer, yoga, breathing, acupuncture, chiropractic, etc. The introduction of non-naturally occurring or artificial additives, chemicals, preservatives, etc…is counter to maintaining balance and inhibits holistic healing."

My wife wanted to reply with something more colorful which amounted to GFY but I had to be the voice of composure. I hope this provides some help in crafting yours.