Yes there is a way even without the cosmology of marvel which makes him layers into boundless

All right so first without the cosmology He has feats that make him way above outer

So Thor one pushed Yggdrasil whhch stretches to the far shore this feat is boundless+ feat

He also goes toe to toe with knull who’s stated to be stronger than the beyonders

The beyonders scale to the mystery

Asgard is also outside of space and time and Thor trancends all dimensions so that’s outerversal so he’s like boundless+ in base form without the Thor force(with it he scales to the mystery) that’s a easy way to him above outerversal.

Now using the cosmology

Read the black letters high lighted by light it explains why each multiverse is infinite layers into boundless and we also said Thor without the cosmology is boundless+ so with it hes beyond infinite layers Into boundless by a lot

so those are the easy ways to get him to boundless with and without the cosmology