Express Entry and Provincial Nomination works in their own way. Provinces Canada PnP are offered by specific provinces and detail eligibility criteria also set by that province.
You need to understand and choose your province based on your situation. Different Provinces that are offering PnPs are as below, please visit each of their website to understand their PnP intake and eligibility to apply.
Deciding which province to apply that is also little tricky, some time you may need to be eligible for the province you like, sometime you don’t want to be in that province. Here is also trade offs as well, the more demanding the province the more competition as well.
To me I felt most demanding provinces in these days are sequentially
British Columbia – Most expensive and beautiful province in Canada, best of IT Jobs.
Ontario – Best place for Banking and South Asian people, famous for Toronto
Alberta – Oil and Gas companies are more here, housing is more affordable.
Nova Scotia – Most beautiful province also booming for IT industries
Quebec – Good to live but French is the main language.
New Brunswick – Most booming province for IT industry and beautiful
Please do you research on all provinces of Canada to have better idea also learn more about Canada.