> I especially do this with my index fingers who will often jump from, say, Y to U directly without hitting J in between.
Oh. I don't know how common it is, but I just tried typing "yuuuuvawere" and noticed my fingers don't come back to home row unless I am done typing. They do sort of hover over it but there is no j between y and u. May be I am wrong, but touch typing doesn't teach to bring back the fingers to the home row after every letter. I learnt touch typing with some typing software which taught single letters, commonly occurring n-grams for n in (1, 3), commonly occurring words etc. So it might be my muscle memory that tells me that there is no need to go back to j if you are typing "you".
Oh. I don't know how common it is, but I just tried typing "yuuuuvawere" and noticed my fingers don't come back to home row unless I am done typing. They do sort of hover over it but there is no j between y and u. May be I am wrong, but touch typing doesn't teach to bring back the fingers to the home row after every letter. I learnt touch typing with some typing software which taught single letters, commonly occurring n-grams for n in (1, 3), commonly occurring words etc. So it might be my muscle memory that tells me that there is no need to go back to j if you are typing "you".