As the title says, I wonder if there's a simpler and commonly agreed way to call those effects. Every time I found myself scratching my head for a word like you can just call the other type of effects hazards.

They are usually called Pulse effects, or pulsing spells 🤔

Venom bloom contain 1 status effect (one roll) and 2 pulse attacks, every 3s, if i remember correctely!