As I understand, in the whole history of the Church, there were never bishops without a territory. Even the so called "titular" bishops are attached to defunct dioceses. A bishop without a jurisdiction is a Traditionalist novelty. Some of the bishop's powers are related to jurisdiction, which he will only have on his assigned territory.
When a Traditionalist bishop acts like he has some authority to govern the faithful, he is tending toward schism, since he is trying to establish a hierarchy that is not related to the Pope. Both for Sedevacantists and R&R this is true. Just look at how careful both Abp. Lefevbre and older (serious) Sedevacantist bishops were not to look like they have a territory. The SSPX makes an effort always to send different bishops to different places, so as not to look like this or that bishop is attached to a certain continent or country.
You're forgetting about Bishops sent to the missions who were not in dioceses.
You're also not making an attempt to understand the whole issue of supplied jurisdiction and what that means where there has been consistently for the first time in history a line of Popes who are not acting as Catholics and must be distanced from.
Its new yes. But that doesnt mean its right.
The temptation is pretending like you have more than just emergency jurisdiction. But many of our clergy have resisted that.
Not distinguishing between the Sacrament of Holy Orders and jurisdiction is a classic mistake of people who are poorly catechized.