I think there is a way to get what you are looking for, might not be as easy from a visual perspective though… But you’re going to run into things like this when switching DAWs, you’ll need to weigh what’s really important to your workflow first. Some functions will appear easier/quicker/slicker in one DAW, but that same DAW could be painfully archaic in other areas.
Cubase offer’s few different way’s to edit MIDI data, the one that looks closest to your FL Studio pic would be the MIDI “Key Editor”. And yes, what you want to do is not going to work there (as stated in earlier comments). But the MIDI “List Editor” in Cubase does allow you to select multiple MIDI Tracks/Parts and edit them individually.
The two screen shots I’ve included shows the exact same three MIDI tracks selected (They are color coded by MIDI Channel). The “Key Editor” is linear and uses what MIDI file you have in focus as your workable file and for empty note areas, edit a blank area and it will end up on the selected file. But if you try to edit area that has data on another track it’s switches focus to that file.
The “List Editor” is only linear on the time line (or Bars/Beats), it stacks each note event then lists it’s attributes (Type, Channel, Value, etc…). This allows you to add/change note data to any file without switching focus. Your guide is the List Data (columns on the left side). A quicker way to identify what file your editing is to use color codes (like the channel colors I mentioned earlier).
Now, I will say that the List Editor more of a surgical tool, it can get very busy looking because it allows you to see/edit just about everything. So if your have a bunch of automation and CC value data on a track it’s going to show up in the list. The longer the list, the more you’ll have to scroll.