The MG is probably favourite for me from a business (need) perspective while the ID4 would be my favourite (within reason) from a, perhaps reckless, want perspective. I guess whether one considers one's car to be an office - with swivel chair, vertical blinds, filing cabinets, whiteboards, fax machine, water cooler, coffee machine, etc - or a toolbox is relevant.
Either way I hope to be back to a 20 hour (max) working week once I change the car next year so I'm not overly concerned about running costs.... it'll be down to what grants are or aren't available and capital cost, I guess.