Hello Strijdparel,
I uploaded examples for all icons in the screenshots. You can see the styles and the options and I assume you know the sizes you want to go for. Usually there are 5 icons as sharp visual example provided in every 100piece 24x24 assetpack.
This Iconset is as the title clearly states 24x24px per icon. Changing the resolution would be a fair amount of work, as resolution change is something which raster graphics generally aren't good for and a quick resize would compromise quality by a lot.
I also don't know if in any future updates i will provide different sizes.
However if you need icons in different sizes I got various sized icons in those 3 sets, while the first one I specifically designed for a wide use for a lot of different games:
https://cyangmou.itch.io/pixel-art-basic-game-icons