Technically these are all still Latin leters, just that they're written in a weird way that evolved from middle-aged Gothic handwriting as opposed to Latin directly which was the case with English cursive. This style of writing, along with the print-oriented ๐ฃ๐ฏ๐๐จ๐ฑ๐ฒ๐ฏ, was abandoned for the Latin equivalent by the Nazis for logistical reasons in 1941.
https://en.m.wikipedia.org/wiki/Kurrent https://en.m.wikipedia.org/wiki/Antiqua%E2%80%93Fraktur_dispute
No actual document looked like the picture in the OP though. That picture is created by using handwritten letters as a font, you can clearly see the spaces between each letter while in reality the letters would connect much more smoothly, and that creates an even more indecipherable effect than it actually was.