Electrics don't produce quite the same level of smoke flavor as an offset or a charcoal smoker. There are techniques and devices you can use to increase the smoke flavor, but it doesn't read like that's your issue.
It appears you cannot distinguish the wood used. Nose blindness aside, when I first started smoking, I could only distinguish hickory and mesquite. Everything else tasted the same. Chicken was my key to learning to distinguish the flavors of medium woods (fruit, oak, nut) in my
WSM. Nowadays, though, I only use mesquite, hickory, oak, and cherry.