What's the difference between NRS games (MK/Injustice) Dial-a-combo and Tekken/Virtual Fighter's strings?

I feel like in terms of categories links (i.e. what is in SF, KOF, Fatal Fury), and gatling which is also called magic series (Darkstalkers, Guilty Gears, Blazblue, Under night, Melty Blood, Mvc2 ,MvC3, DBFZ) is pretty clear.

But I struggle to understand what makes things like what NRS games do and 3D fighitng games like Tekken and VF different.

My experience with all three games is Mortal Kombat 1, Tekken 8, and Virtua Fighter 5 Revo, btw I'm pretty new to the genre so I'm trying to make sense of each game's combo system and how they differ from each other.

If anyone played these specific 3 installments I mentioned feel free to help me understand the differences.