considering that all three of these regimes are not committing genocide at the moment, Iran not even interested in said genocide and the other two only existing because they are a resistance movement against Israel. yes, I think you can make a very compelling case that said one genocidal terrorist regime is worse than the others.
Hezbollah was relatively quiet before the war kicked off, Hamas was supported by the Israeli state under Netanyahu to act as a spoiler towards the PAs attempt at a diplomatic 2-state solution, and Israel has been in power for the past 70 years. Hamas and Hezbollah literally only exist because Israel is an expansionist apartheid state.