ok, i'll tell you which of the stuff you mentioned is the more important ones that point out if he likes u or not (since im pretty much same age, have been in similar situations (friend zone etc) and stuff that happens to myself all the time.

The texting first and on a daily basis is pretty key in general, some of the other you read in your first post also add to the general feeling hes interested, but i find others in your second post bigger giveaways. The driving you home last is a dead give away imo and ive pulled that a bunch of times, even though its easier doing it by dropping off other friends list.

The other things youve listed are good hints however its important there are many and not jsut one or two.. if its a small amount could just be because hes an over flirtatious type of person (i got a friend who sends out mixed signals to tons of girls). All of those together add up, not the each individually, very important.