As said above, a fridge is a fridge. It is an insulated box with drawers and a compressor. Don't overthink it or overspend. There is no refrigerator perfect rule of thumb (as they all have exceptions), but here are some guidelines.
1) Side-by-side are the most convenient. But the massive wall between them eats a lot of space. I mean a lot of space. I went from a top/bottom fridge to a side-by-side that was 3" taller, 3" wider, and 2" deeper. The top/bottom fridge held more.
2) Shop by price and by energy costs. A $600-$800 fridge is usually quite a good one. You don't need to spend $2000+. Fridges use a massive amount of energy and an inexpensive one could cost you in the long term as the energy costs rise.
3) Some idiot invented the shortcut "fridge" when "refrigerator" has no "d".
4) Bottom freezers can put the main items (usually fridge items) at eye level. But, they tend to put the coldest part right near the hot compressor. Thus, they can be quite energy inefficient (but some are good). Be certain to check the energy tags if you want a bottom freezer.
5) Oh, and shop by size. It would really suck to wait for the delivery just to find out that it won't fit.