The classic screen text font

[YellowYahooey]

I do recall there being several versions of the screen text font over the years (which explains the different versions of the lowercase "q" and the number 4, to name two characters). But the official version many all know and love was likely established sometime during Season 11, and while that version does bear a close resemblance to Futura, I took a closer look at a few images with such font displayed, and I do know there seemed to be a slight difference between the Futura 5 and the Sesame Street version. The capital I, lowercase j, numbers 4 and 6 were definitely not Futura, I don't think. Did the CTW actually design that font themselves, and maybe even slightly tweak Futura font?

Also, the 4 was given a short-lived update in an early Season 20 episode, according to Muppet Wiki. That version was taller, and I didn't like it. Thankfully it reverted back in Season 21.