Pick a layer
Three things that are true of all nine
They are not time synchronized. Aircraft positions are seconds old. Radar is 10 to 20 minutes behind. Infrared is typically 30 to 60 minutes behind. Fire detections can be three hours old. SIGMETs are warnings about the next few hours. Reading a single screen as one moment in time is the most common mistake, and it is ours to flag rather than yours to discover.
They measure three different kinds of thing. Radar measures scattered power. Infrared measures emitted radiance. A SIGMET is a human forecaster's judgment. Presenting all three as "weather" flattens a distinction that matters when they disagree.
Blank never means clear. Every layer has coverage holes, and no two layers have the same ones. Radar has no ocean. Infrared has no Europe or Africa. AIS has only two countries. The GNSS layer only exists where aircraft fly. Absence of data is the default state of most of the map, and each page says exactly where its own blind spots are.