Okay... I had a look and it seems that TT Games seems to store the icons in a weird way. They also don't seem to open in GIMP (I know that some icons are in standard format) which is where my experience ends. If you have Discord, you should join the
TT Games Lego Modding server. I don't have Discord, but I'm sure those folks will know more than I do.
applecuckoo - ripper of sounds, sprites and models
Places to get help:
DYKG/VG Resource Discord - This is where most of the ripping experts on the VG Resource hang out these days, so you should probably start here. Any requests to rip stuff (i.e. "Please rip sounds/models/sprites from game X!") are only allowed here as per the rules.
ResHax forum - Another forum that is home to most of the reverse engineers who were on the old ZenHax and XenTax forums. A great place to get help for any mysterious files. I'm also there under the same username.
And remember, always upload example files. That way, people don't have to dig in and fetch them for you.