Inanna is a gleeful switch, though he tends to be on the sweet side of the sweet/harsh continuum when he doms. But he can be talked into harsh, if that's what his partner goes for.
Jason is.... well, Jason would like you to think he's a dom, but he'll switch for the right partner, so long as there's no humiliation kink involved. He's got enough of that shit in his head already.
He is very much a "you're mine and i'm gonna take care of you" kind of dom. And if taking care of someone means flogging them until they cry, he'll do that.
This is totally different from his "violence as foreplay" kink, where you start off equal but eventually someone's going to be pinning someone else down. That's less SRS POWER DYNAMICS and more good fun.
I feel bad for not having more to say about Inanna, but he's a love goddess, and so much of how he interacts with someone sexually depends on what it is they most need.
He has preferences, but his absolute favorite thing is getting someone else off in the way they like best, so his own preferences don't make themselves apparent right away.
He will take and hold his share of the power, and will also take and hold someone else's share of the power if they're into that, but his power is his and you can't have it.
I feel like subbing might be good for him if it's safe and loving, but right now he's in a place where he canNOT just give up power to someone. Not again.