The graphite degree system was invented by Franz Hardtmuth. When naming the grades, he chose H for Hardtmuth, F for Franz, and B for Budějovice, the city in which the pencil factory is located. So while the F pencil may seem like an outlier, its name isn't completely arbitrary.
Hat guy (3-4 hours maybe?) and gal (1 hour or less) were done in Clip Studio Paint, First time using that program and I loved it! Spear guy (about 1- 2 hrs.) was done in Photoshop... I really got to start timing myself more... Looking forward to seeing what's next for us!