Exceptions: you graduated from college and now work W-2 in line of work we can use offer letter and first pay check before closing; you are self employed and income is declining we use the lower YTD number; bonus can be used if employer states in writing it continues... and about 300 other variables.                             

There are far too many variables for someone to honestly answer this question.

And how can other variables effect your decisions?  

@Max SteinmetzYou can probably do for certain construction like single homes or condos but commercial has too many variables as well as land development..

Get variable rate / traditional HELOC to further tap into the equity to draw only what I need for future deals. 

especially now that they are going to go for sale at a deep discount because of interest rates going up and owners holding variables loans form 2019- 2021

I would prefer to go with a better long-term option, and Cleveland, my representative for the midwest, appears to have the best returns both in the long term and the short term.There are a few variables that could change these calculations quite a bit, and feel free to let me know your thoughts on them. 1) There may be better deals available in each market than those I listed, which were just what was readily available on the MLS.

Whether the variables are right will depend on the investor. 

Also want to mention I am aware there are many other variables.

Develop a "standard" Agreement that you only have to change typical variables to suit a particular transaction.