You'd still need product type in your title, since Shopify Product Type is mainly used for internal categorization.
Note to optimize your on-page SEO, you need to edit the SEO title, not the Product Title, open your Product Page on Shopify -> Scroll down to the end you'll see option to edit SEO title for your product page.
For example, if I want to rank for a T-shirt product, I would put very long sample funny phrase t-shirt there. Make sure your Title is under 70 characters and must contain the keyword
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A common mistake with SEO is using the wrong words, you have to include words that a person trying to find your product would search in Google. We go into depth into everything in our video:
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