What pens should I get next!

I am a senior in high school and want to go into an engineering program next year—do a lot of diagrams and writing for school and really love Pentel Energel Metal Tip 0.7 for writing quick notes and practicing questions. Also really like the uniball Signo Micro207 as well. With this in mind, I want to expand my pen horizons what pens would be cool to try next? I really wanna try something different from just Energels and other basic-er pens. Also mechanical pencils are my jam too!

Attached is my pen collection plus super rad holder!