curated.design
In short: Curated (curated.design) accepts design gallery submission. It is free + paid tier to submit, takes real preparation and a written pitch, and scores 60/100 on our impact ranking (useful).
Submit the polished your tool landing/tool UI with clean screenshots and design credits.
Editorial/design review applies; submit only polished, relevant work. Listing link is currently reported nofollow.
Priority is medium, which sets the band. It is free + paid tier and involved to complete, which adjusts it within that band. The score ranks your queue — it is not a measure of domain authority.