[2020] Schematics to show already learnt?

Ehm... Hate to break it to you, but they do. The little book icon in the corner of the item.. If it's open, it's learnt, If it's closed, It's not.

Keep an eye out for icons like that in the corner of each item, They do mean things. A little gear means it has mods, an explosive icon means explosives..etc.