I run many Gnosis Chain validators and these are the Graffiti messages that I have included in the blocks that I have proposed.

validated with Dappnode by thing not realizing graffiti is limited to 32 bytes.
proposed by thingelstad.eth
merged with thingelstad.eth to celebrate the Gnosis Chain merge.
thingelstad.eth was here
this block dedicated to Tammy
this block dedicated to Tyler
this block dedicated to Mazie