I think what you're looking for is this... I'll use the Nero-style SLW as an example, but it fits for almost all the Jebao powerheads, gyres and return pumps.
SLW-10 - Original Nero style powerhead, blue blades, analog controller, no wifi
SLW-10m - Same powerhead, still with blue blades, new analog controller that adds wifi
MLW-10 - Newer digital controller with wifi, purple blades
ALW-10 - Updated controller, still wifi, white-ish blades
ELW-10 and ELW-10m - Different updated digital controller, back to blue blades, two different options for controller, both wifi, but the 10m offers "AP" connectivity, meaning you can access/control it via its own wifi directly without connecting it to your home wifi.
The same basic naming applies to the SOW/MOW/AOW/EOW, SCP/MCP/ACP/ECP and even return pumps SDP/MDP/EP. etc, etc.
Does that help?