How to Identify Shopify Stores at Scale Without Using the BuiltWith Plugin?

Hi, I have a paid Clay plan and I'm looking to build a list of Shopify stores as my base dataset. Since I can't use the BuiltWith plugin to verify whether websites are running on Shopify, what's the most cost-effective way to identify Shopify stores at scale? I'd appreciate any suggestions on tools, workflows, or data sources that can help with this.