These have snow right now, but my favorite easy and mostly flat ones are Iron Goat (go clockwise), Monte Cristo, and the often crowded Franklin Falls. If you do Iron Goat, stop at the nearby Deception Falls for a very short hike and a scenic waterfall.

Grasshopper Pass had some amazing open views and wasn’t that steep but the “road” to it was beyond awful.

Lime Kiln is cool and probably snow free right now.

Margaret’s Way is supposed to be flat also, but I haven’t visited it yet.

Like others said, get the WTA app and/or Alltrails.