At the risk of being a nitpick, this is not a tracker. A tracker has one axis for time (usually down) and another for channels. Each cell is a note, the pitch

At the risk of being a nitpick, this is not a tracker. A tracker has one axis for time (usually down) and another for channels. Each cell is a note, the pitch of which is written as text (eg “C-5”). This lets you see and edit multiple channels quickly in the same view. That’s the distinguishing quality of trackers. This Excel DAW appears to have a separate sheet per channel: each sheet has one axis for time and another for note pitch. In other words, it’s a piano roll. These are common in most regular DAWs but not in trackers. In other words, the only thing this has in common with trackers is superficial, ie the grid/table look.