[dqh]

Is all Braille identical? No equivalent of typeface where the dots are shaped of spaced differently, but in the same Braille pattern?

[miki123211]

No, here's a nice table of the sizes used.

https://www.pharmabraille.com/pharmaceutical-braille/marburg...

[Symbiote]

When printed it would be different if the embossing pins were new or worn.

The dots could be squares. The size of the dots (boldness) can vary.