The "Collapsible Content" section of Shopify's theme "Dawn" can "keep the first row open" by default, but with a little tweaking you can specify any row other than the first to be open from the start.
An example of how to set the "Collapsible Content" section of the Shopify theme "Dawn" to open any row (column) other than the "first row (column)" from the beginning.
[(For the Dawn theme) Setting method ①] Add the schema to "sections/collapsible-content.liquid" and the label to "ja.schema.json"
[(For the Dawn theme) Setting method ②] Add the code to "sections/collapsible-content.liquid"
