thanks for the link! I saw that before but I think that is actually different. that uses a custom sprite sheet and as far as I know you can't specify using the icon of the weapon itself. the simplicity of using the icon for the weapon itself is pretty nice. unless the linked asset lets you use 1 frame weapons that are part of an atlas.
it seems like the linked asset mainly lets you use more weapon attack animation sheets (1 sheet with different sprites for weapon) instead of letting you use a sprite sheet (icon set with 1 frame for many weapons) and select 1 frame from that set to use for that weapon. I would love if I'm wrong on that though!