The Sons of the Most Holy Redeemer (Papa Stronsay) have a whole webpage dedicated to Pope Liberius in which they defend him against the accusation of error.
As for Pope Honorius, when he wrote that Christ’s will was one he was referring only to his human will, which indeed is one, unlike ours, which have been divided by original sin. What this means is that our wills are conflicted between serving God and committing sin, whereas Christ’s human will is singularly devoted to God. Honorius as not denying that Christ had a divine will as well and this can be seen if one take dingo account the context of what he wrote - ie, the question that he was responding to.
As for the other cases, I don’t know about them off the top of my head. What I do know is that when the Fathers of Vatican I were researching before the definition of papal infallibility was made, about 40 instances of popes being mistaken in their opinions were found. That is why the definition has specific parameters for infallibility, and if one considers the instances of papal error in light of these parameters, one finds that the definition allows for such cases (eg, of popes erring in private letters not mean to be binding on all the faithful).