(4) sounds like some kind of drum, almost sounds kind of woody, like a rimshot or something. its being put through a formant (or perhaps bandpass) filter, with some flanger or chorus (for some reason i tend to get those two mixed up in my head; always been a problem of mine and i've been producing for years), and some good ol' reverb
(2) has some light detune on a good ol' 2 osc sawtooth, with some of that nice atmospheric delay you get where the filter cutoff goes down with each sucessive delay. and theres some phaser there too. he's also doing something with the decay of the ADSL filter but I can't really say; its gonna need some experimenting on your behalf
hope these helped!