I like to help friend but not sure if I can name headphone models that meet your criteria off the top of my head. If you aren’t aware of it already, there is an extensive repository of headphone measurements from various sources at AutoEq/measurements at master · jaakkopasanen/AutoEq · GitHub.
The oratory1990 directory is all GRAS. Those measurements are from oratory1990’s repository of EQ presets. The EQ preset files show the before measurement as well as give it a rating on how closely it matches the Harman Target. I think this type of rating is also available in the AutoEQ code repository, but I don’t know where.
And of course there is also a topic in this forum that contains measurements made by Resolve. Some are GRAS and some 5128. Your call what is considered neutral.
Hope that helps!