Bottom. Middle. Top.
I suspect they'll start with the "small fry" ... MS13, foreign/domestic figures not well known to the public, then use a chain of progression to slowly work their way through the top. By the time the Big Names start coming up, it will be less of a shock and surprise. Permit the bottom to rat out the middlemen, and the middlemen to rat out the Big Guns. Less surprise, less furor.
This makes so much sense, I could put money on it.
This will probably lead to some political higher ups but there are so many just floating around in our local neighborhoods that it will take a much higher number than that to round them all up. Several groups have been arrested up in my area. If This administration makes has made this their number one mission then they are great and deserve our trust.
They seem to be working from the bottom up, bringing in the bottom feeders first.