Editing Terralith for more vertical scale

I am looking at the data/minecraft/worldgen/noise_settings/overworld.json file for Terralith and I've tried to adjust any and all the numbers like y_scale, y_factor, and size_vertical and none of them seemed to have had the intended effect. I sniffed my way to this file by changing the default_block to lime wool, but maybe the correct place to set vertical and horizontal scale is somewhere else?