prayandhope
A search for "alternative transcript" on this forum yields several hits where people mention that they are taking classes through UCLA Extension. As an East-coaster, I'm not too familiar with UCLA - is its Extension program highly regarded (or are all these people simply from CA?)?
Most of the UC campuses have extension programs I believe, and most are pretty good but they might not all have the same focus (e.g., UC-SD has a lot of life sciences stuff). Both UCLA and UC-Berkeley have extension courses that I think would be a good fit. In an admissions chat transcript a McCombs adcom recommended UCLA's Mathematics for Managers class as a good class. Personally, I took both Math for Managers and Calculus concurrently through UCLA Extension last summer. It had been ages since I took math and I didn't do well in the classes that I did take, so I felt like I needed to show I could at least add.
prayandhope
Also, anyt thoughts on whether it makes a difference to adcoms if the course was taken online or in person?
It depends I would think. Taking something like UCLA-Extension is not the same thing as taking a class through an online diploma mill. I would think something like UCLA-Extenion or UC-Berkeley Extension would be likely be a bit better than a local community college. You also need to consider costs. Taking extension classes through UCLA or UC-Berkeley is relatively cheap compared to taking classes from 4-year schools live.