A job with rules that don’t change when the manager does

I’m seeking help finding a career path that suits me. I live in the US and I currently work for a large international healthcare data company as a remote patient records processor. My job is basically just being an Excel jockey, moving data from one client to a spreadsheet and then from the spreadsheet to a different client site, things like that. I want to emphasize that I LIKE the repetitive nature of my job. I am autistic and I absolutely love logging in, meeting my productivity goals with little outside input, and following all of the rules to the letter.

This is where I encounter the one thing I hate more than anything in the workplace: Rules and guidelines that frequently change because there’s a new manager on a power trip or as a means of punishing the group or to spice things up by completely changing our whole process to take more time because the boss feels a need to “make their mark.” I want a job where what I do and how I do it is defined by a rule book or a law which cannot be easily changed, and I know what to expect in terms of flow and the correct course of action without frequent changes. It also must be something that I can do remotely, as I do not go outside for any reason. I prefer not to work directly with customers or client representatives. I do not mind doing something boring or repetitive that might bother a non-autistic person.

However, my math skills are extremely weak and many jobs that value precise work require working with money or number values, which won’t work for me. I like the job I have right now but it just doesn’t make enough money for me to get by on my own. I currently make 33k a year and for me to get by in a studio apartment I will need to make at least 40k a year.

Does anyone have an idea of what other options I could pursue?