What usually raises concern
Imported ceramics, hand-painted finishes, older glazes, and unclear supply chains are the patterns most likely to deserve a second look. The issue is not only whether a product is marketed as ceramic, but whether there is enough evidence about glaze safety, age, and source.
Leadly's kitchenware records are useful because they put product details, recall context, and comparison notes in one page instead of forcing you to search brand by brand.