I think there's no way of avoiding the basic math, because there's no list what bike has low gears and what bike has higher gears.

Let's ignore the wheel size and just focus on the smallest chainring (front sprocket) and largest cog (rear sprocket):

22 tooth front with 36 tooth rear is about a low as you can feasibly go, and I'm pretty sure it would be low enough for you.

Let's take 24t front and 36r rear - treat that like fraction 24/36, which equals 2/3 (or about 0.66).

Any front-small/rear-large that's less than 2/3 (or 0.66) will probably be low enough for you.

Take the smallest front sprocket tooth count and divide it by the largest rear sprocket tooth count (use a calculator or just type it into a browser) and if that number is less than 0.66 it will probably be low enough gearing for you.