Nano is a very popular dev Board and keeping the "Nano" name might be a strategic decision for brand recognition. Even though some Nanos differ significantly(like having WIFI functionality), they are similar because of: Small form factor: All Nanos are compact and breadboard-friendly, making them ideal for projects with limited space. Basic functionality: They all retain the core functionality of the original Nano, making them easy to learn and use for beginners familiar with the platform. While features differ, the "Nano" name emphasizes this core concept, making them recognizable as part of the Nano family.