all of this is, you guessed it, Helvetica.
and btw – I am not saying only use Helvetica – what I am saying is look at how varied and alive and appropriate and different each logo looks.
read the article, notice and analyze the different weights used, different casing, different spacing, and all the members of the family at play (bold, condensed, thin, rounded, etc)
The link you put in this post, its a great website, thank you Professor.
It’s amazing, and it surprised me.
I love some of those logos.
The logos are simple and beautiful.
Simple colors attract my attention.
Love,
Xiao Yan Wu