I understand that this street artist is prevalent and I assuming appreciated in your community. Many artists have social media to get added recognition.
Banksy as you have shown in your last post is somewhat of an anomaly. Though even if they don’t actively promote themselves they are known worldwide.
My recommendation to you is to find: the artists name, something in a local newspaper/government announcement/travel guide etc about this artist if they don’t publicly advertise for themselves it will be difficult for Niantic to vote in favor of restoration of the wayspots.
That said the art represented in your photos does match better with street art that is positively identified by Niantic:
Please note if any of these murals are on Singke Family Private Property (SFPRP), they will be removed even if they are otherwise eligible.