I think that Lot being righteous has far less to do with Lot and much more to do with God and His faithfulness.
The reason I don't accept Lot's wife as being righteous or some type of Christ is that her death didn't save anyone.
But I too found it to be an enlightening conversation.
i think we should back up, slow down and look at what Peter says:
2 Peter 2:7-9 (nkjv)
. .. and delivered righteous Lot, [who was] oppressed by the filthy conduct of the wicked (for that righteous man, dwelling among them, tormented [his] righteous soul from day to day by seeing and hearing [their] lawless deeds)— [then] the Lord knows how to deliver the godly out of temptations and to reserve the unjust under punishment for the day of judgment
Peter doesn’t pull this out of thin air.
he says Lot is righteous, that Lot was oppressed by the filthy conduct of the men of Sodom, and that his soul was tormented/vexed by seeing and hearing of the vile things they practiced.
Peter gets this from the OT.
What is it Peter reads and understands that leads him to these conclusions?
Do we dare tell him 'the text doesn't say that!' lol
The text leaves a lot of things out. Hebrew literature presumes that the one reading it is intelligent enough to put 2 and 2 together into 4. she something in the narrative should be supporting Peter's conclusions, and I think that figuring that out is going to give us a big advantage in figuring out how to rightly interpret the rest of it.