T2 is pretty much synonymous with pathological insulin resistance and hyperinsulinemia. Even someone who has advanced to the stages of insulin deficiency will still be resistant to whatever they still make or eventually end up injecting.
Nothing can be certain without proper testing, but in the absence of this I think anyone with T2 can reasonably assume they are insulin resistant to a fairly large degree. The fact that the NHS still continues to ignore the value of these tests remains my biggest bone of contention with the standard of care. It’s preposterous, putting it politely.