Hey Rob, thanks for the question. Banks will always consider your personal financial situation including your credit score. However, I find the more your portfolio grows the less it matters and the less you want it to matter because you cannot scale real estate based on your personal income.
When buying a SFH in your personal name they will take your credit score, income, etc. into account. When buying a SFH in a corporation they will take these into account to a lesser degree at the start, but also consider the income or potential income said property will produce and base their LTV on the income it produces.
Something to keep in mind when buying real estate in you personal name outside of a corp the rates and terms will be more favourable. When buying in a corp you will see higher rates, shorter terms, and lower LTV, but the liability is greater and the your personal situation will be better off.
Best is to find a lender that will loan to a corp at residential rates a not currently have a residential mortgage limit, which most do.
Hope that helps!