It seems you are the only person who understood the question wanting to know what a seller makes (not even sure how or why you think that).As a typical part of the DD process it is not uncommon to ask for property/entity tax returns.

By and large, MTR residents are coming to work (or for relocation due to flood, fire or wind), and they approach finding housing with their analytical brain, not the emotional one.It's also not uncommon that the person tasked with finding accomodations for the MTR resident isn't going to be staying there at all.

As a loan originator I can tell you what they did is not uncommon.

Wholesaling is very uncommon in my market, and all the other local title companies and attorneys I called seemed to not know much at all about assignments and/or double closings.

Your experience with the DSCR loan process sounds frustrating, but it's not entirely uncommon for borrowers to encounter last-minute changes, especially in complex transactions like cash-out refinances. 

It isn't uncommon for us to see a new client who could have been reducing their taxes in the past and lost thousands as a result.

Plus you know your tax preparer will find the bookkeeping acceptable (it's not uncommon for the tax pro to have preferences as to how they like to see information presented).

It's happening all over LA ramping up the change to pat for the stadium (Rams) and to have the crowd live around it and populating the area. 90 day notices (so much so moratoriums have been placed because it's affecting GLUTS of people) where rents are jumping from 12-1300 for 2br 1ba apts to 28-3200 .. basically defacto evictions knowing people cannot afford it, specifically those on fixed incomes (this isn't uncommon as of late) .. so much of a jump Bay Area housing takes notice.

It is not at all uncommon for 1 of my 3 properties to be late as the tenants are trying to stretch their checks to meet the end of the month.  

It isn't uncommon to have a multiple offer situation on homes that have sat for a long time once they finally reduce the price to something investors see as a good deal.