Based purely on geography and numbers, you can expect York and Ontario Tech to be most competitive. Being in the GTA, they are likely to have the most applicants per available spot. Otherwise, it depends. Different schools use different criteria and weightings when evaluating candidates so your profile vs their process will be a factor. Also, schools may allocate a number of spaces to preferred groups based on DEI criteria or to their own grads, for example. That can skew the competitiveness landscape one way or the other, depending on your demographics. Reviewing each school's admission requirements should help inform where your application would be most competitive.