all items you modified look weird and hard/not at all to distinguish because you set too small icon_size.
i grep'd Factorio's data and the only prototypes with icon_size = 32 are some graphical effects.
a few other things have icon_size 128 and 256 but recipe and item icons are all 64.
changing all icon_size = 32 to icon_size = 64 fixes the problem.
i won't create a pr because i never did that and have no time to learn howto.
all items you modified look weird and hard/not at all to distinguish because you set too small icon_size.
i grep'd Factorio's data and the only prototypes with icon_size = 32 are some graphical effects. a few other things have icon_size 128 and 256 but recipe and item icons are all 64.
changing all
icon_size = 32
toicon_size = 64
fixes the problem.i won't create a pr because i never did that and have no time to learn howto.