The latter may have a 5G after FIBR to indicate that it's the 5G capable bandwidth. The WiFi's name is usually indicated by the Internet service type followed by the last 5 digits on the router's MAC Address, i.e. For PLDT, there's a default device (modem/router) SSID and password.
T he WiFi name (or SSID) is normally visible to any device capable of scanning WiFi connections. But first, how do other users exactly find your WiFi and connect to it?