Everything seasoning sounds intriguing, I occasionally use Montreal seasoning, but my go to steak is ribeye rubbed with olive oil, garlic, salt and pepper, then allowed to warm to RT before grilling. I think the last time I used Montreal was on some flat-iron steaks.
Tacos al carbon (what we called "fajitas" in Houston TX back in the 70's) are skirt steak pounded to even the thickness and marinated with lime juice, garlic, and salt. Maybe a touch of cumin or coriander to mix it up. Sliced against the grain and served on corn tortillas (not flour!) with your favorite homemade salsa.
A family favorite is flank steak marinated in olive oil, balsamic vinegar, garlic, finely minced rosemary, salt and pepper, and sliced to serve anyway you want. My family likes this on big summer salads.