I’d be interested in the answers to this one on the premise that no-one apart from the OP and the guarantors actually know the terms of the deal they signed - including the clauses on interpretation.
If you’re intending to have them as joint tenants, (assuming you can persuade them all to be liable for each others debts when one of them hasn’t even passed referencing), then each tenant is liable for the whole rent and if one defaults, you can demand the shortfall from the others. I wouldn’t recommend this though. Likewise with the guarantors. Unless you are using limited guarantee agreements, (where they just guarantee the rent of one tenant), then each guarantor is underwriting the whole rent.