The I 130 is filled in by MIL, and it asks about daughter and daughters family which includes the Husband.
The form she fills in the DS 260 comes into play when her Priority Date is current, so not know.
No doubt it will be revised a few times between then and now. The MIL has to complete the I 864 and will no doubt not be including the Husband as a Beneficiary, well the current one anyway.
If you are concerned about the current Husband tagging along by mistake, not going to happen. Apart from anything else no way he would know.