The Roman Catholic Church has never ruled on Swedish Lutheran orders could they be valid?

They are invalid due to them straying so far from doctrine . Eastern Orthodox didn't stray too far, so theres are valid but illicit.

Edit: I was Orthodox so I know what I'm talking about. EO has been stuck since the schism due to being unable to call a council due to their being no Pope for them to open it as Eastern Canon Law requires, plus the whole disunity with the patriarchs and rebellion by the other patriarchs to Bartholomew.

As for the Augsburg Confession, you are referring to the progressive Priest Ratzinger during his progressive phase and not the Orthodox Benedict. If that was the case he would have considered it in his discussions with Conservative Lutherans over a possible Lutheran Use.

If someone is ordained and then leaves the Church, the ordination is invalid by way of schism.

Catholics and orthodox are a special case. There has always been a drive for union. There is theological difference but it is small.

I am a Byzantine rite Catholic. We celebrate the same liturgy as the orthodox yet we are Catholic. This is referred to as the fullness of the Catholic church. Various national differences in ritual but perfect uniformity of faith.

The difference been the schism is that one was an armed schism. The orthodox have never done this.

The question of the validity of Church of Sweden orders would now revert to the ordinal as used over the years and now by the Church of Sweden. If it has the same defects as the Anglican ordinal, the their priests and bishops would not be validly ordained.

And while I am not sure, have they started attempting to "ordain" women to these orders? That would automatically be invalid for those women and anyone the women ordained. A woman may never in actuality and validity become a priest or bishop.

Laurentius Petri left the Church when he became a Lutheran. His office became invalid. No bishop can succeed from an invalid bishop. It's a no brainer.

I would doubt the Catholic Church would consider their holy orders valid.

Swedish Churches are Protestant and thus part of the unity of Christianity.

They could well be if they were within the apostolic succession.