Just watched this video:
https://www.youtube.com/watch?v=LIEc9qXd1_E.
It outlines all the statuses, other similar effects (like Perish Song), *and their effect activation.* Really handy, and I immediately thought of this question when I saw it. Summary (of things not already in the answer):
Burn deals 6% damage every 3.5 seconds
Poison deals 5% damage every 3.5 seconds (and no additional effect - it's just worse than burn)
Paralysis slows only running speed, not cooldowns
Drowsiness doubles cooldowns, but has no effect to running speed
Toxic deals 1% every 2.5 seconds, and increases by 1% every tick
Freeze... well... freezes the Pokemon for a random amount of time, but can be thawed by the same moves as the mainline games e.g. Flame Wheel, but still not every fire move.
Please do watch the video though (if you trust I'm not a hacker) to correct me where I misremembered things.