Gravel Bike vs Drop Bar Bike Geometry

Gravel bikes and drop bar mountain bikes look really similar from afar.  Big tires.  Drop bars.  Are they essentially the same?  Are there noticeable differences in handling?  Which one should you get?  In this video I break down the most common bike geometries in the modern gravel bike and compare it to drop bar mountain bikes and translate all in plain English :)https://youtu.be/AFGXxOy4uDg