It’s probably confusing for some people that Malaysian food has so much range (it’s Chinese-ish, Indian-ish, Malay-/ Indonesian-ish!) but
I would be skeptical of any place that tried to do it all without focusing on a regional type like all of those places
Even back home you’d never go to a pan-Malaysia place, you’d go to the roti place and the noodle place separately (or in the same place but from different vendors)
I find the list above reflects accurately where the people who set up those places are from, and therefore they have good food. Sometimes I get annoyed by other Malaysians and Singaporeans who are like ‘this is not authentic’, but the food I like may well be a different cuisine from what someone else thinks of as Malaysian or Singaporean, even back there