My daughter is taking a chemistry and a geometry course through WIlson Hill Academy this year. They are actually online classes, in that she had to be online with a webcam participating in the class for an hour and a half twice a week, and then work is submitted and tests are taken through their website which uses the platform Canvas. It is a Christian classical school and it has been going pretty well. The teachers are more conservative than me, but seem to at least be open to presenting a variety of views and I feel like they expect a high level of critical thinking from the students. It would be kind of pricey to take all your high school courses through it, but some families do. She also takes an AP Human Geography course through Pennsylvania Homeschoolers. These courses don’t actually meet in real time, but there are forums the kids have to participate in and the teacher posts videos of herself for the kids to watch along with doing their assigned readings, quizzes, and other assignments.
I know families who have used Potter’s School and been happy with it. It would be less conservative than A-Beka, but probably not at all progressive in the science and politics department. It is the program that was recommended by IMB education consultants to our neighbors. (We serve with SIL in rural Mexico.)
I have found this thread at the Well Trained Mind Forum has a wealth of information about online options: https://forums.welltrainedmind.com/topic/499321-talk-to-me-about-online-class-options/
You might also check out Calvert. I have know a couple missionary families (on the not fundamentalist end of the spectrum) who have been pleased with it.
You could also check out Kolbe Academy, which is Roman Catholic, but I have know Protestants who have used it for some courses and been pleased.
Keep us posted on what you learn or how you like what you decide on. It’s always hard to recommend stuff you haven’t personally used, but you can’t use everything.