Oh, but by all means: you two do you two.
This having been said, the actual name remains "Deep Talkin' Bass". It's right there, on every single packet sleeve.
[There has never been such a thing as "Deep Talkin' Rounds" either. The type qualifier was - and is (there is still a DTBR Beatle Bass set) - added after all three magic words. I'm going to have to invoke the dreadfully-named "Mandela effect" (don't know about you, but *I* never thought Nelson Mandela had died before he actually did).]
Using "DTF" to
distinguish them from "LTF" is not the most practical move either: I've seen more than one instance of protracted, misunderstood exchanges with one mistaking one initial for the other, here on TB.
No need to be overly lazy with a letter.