the easiest screening tool is USMLE step 1 ... because everyone has to take it in MD residencies (not sure about DO residencies) ....
some programs may have a point system screening tool ... this may take in to acount multiple factors that can be quickly reviewed such as clinical grades, AOA, USMLE, research, etc.
the problem with everything except for USMLE is that to really assess each area you have to read into the application more (kinda defeats the purpose of a screen) ... and everyone is not on the exact same level ... that is why many will have a "cut off" for USMLE scores ....
so, there are many that may use reseach as a screening tool ... it is clear to me that placing research experience on the application is like checking yes i volunteered when applying to medical school ... many applicants i have interviewed have real research and an understanding of it (up grade👍 ) ... and others it is clear that they have no idea of what they were doing (down grade👎 ) ...
so, do what you want .... if you are honest, work hard, and have at least half a brain, it will show and you will probably get in somewhere ... trying to pull the wool over our eyes, not smart .... many of us know the tricks and will call your bluff ....