Hmmm from the title I thought he had actually said to you that you were not his type, but in reality you are assuming you're not his type based on what you know about his past relationships, which is probably very little.
For all you know, what those women and yourself might have in common is your kindness, intelligence or sense of humour. Maybe that's his type, and nothing to do with the colour of your skin, size, etc.
I understand where you're coming from, I have been very insecure in the past and compared myself to my partner's exes, but you have to remember that you only know a sliver of their story and there is so much more to a person than what they look like.
As for the things he did with someone else (e.g. introducing to family earlier), that might have to do with a change in him rather than you. Maybe he got tired of introducing new gfs that went nowhere and he didn't want to do the same with you. Again, we learn from our good and bad experiences, but that doesn't always have something to do with our current partners. Imagine if he found out you, say, moved in with your previous partner in a matter of weeks and with him you have waited for twelve months, maybe he would think you loved the other person more when in reality what's probably happened is that you have become a little more sensible thanks to that experience.
I you hold insecurities in regards to your racial background, I would encourage you to seek help. You got this!