According to AK (and I believe him on this) moving iron are most susceptible to EMI, then moving coil, then moving magnetic.
Reality is not always the same as theory or experiment. I live in RFI/EMI central on top of a hill surrounded by 2 airports a large number of phone masts & communication transmitters on top of buildings in Ealing Broadway sufficient to charge an in-line capacitor if a system case is grounded/earthed. I do have 100 clip on ferrites on TV, digital & power leads none on phono leads.
There has never been a problem with my 4 Cartridgeman moving iron cartridge's from Musicmaker' 1)2) & 3) to currently a Musicmaster MI on a Hadcock 242 Silver plus, grounded at the Croft phono stage, 35 + years ago I had a Dynavector HOMC 10 x 5 on an SME arm that picked up passing mini cabs though on the same arm a Shure V15 III MM had not.
I have never read on a forum of a Cartridgeman, Grado or Soundsmith MI having a problem with EMI, further I have checked the internet with regard to Decca & london Decca which have an accepted theoretical chance of a problem with EMI which does not appear to exist in reality.
Moving iron cartridges are essentially immune to capacitance only really resistance needing somewhat less than the standard 47k. Joe Grado who held the patent on moving coils chose to make moving iron cartridges since they have the lowest tip mass & therefore responding with lightening speed.
I have no vested interest in your choice of cartridge . It would be a shame however to be so dogmatic on the choice of cartridge or any component on the written word of another, have a listen you may be surprised. An aside I use a much lauded Croft phono stage, sadly no longer to be made, apparently Croft products do not measure well but sound sublime as does my Musicmaster.