Pretty sure the Warp Geometry Bubble graphic was created by Mike Okuda for the Enterprise-A bridge at the end of The Voyage Home, and was reproduced in Lora Johnson's Mr. Scott's Guide.
The LCARS currently listed as 'Unknown J" in the LCARS - TNG folder is from Science II on 'Firstborn' (s7e21). It was then used on Environment in 'All Good Things'. On the same AGT shot you can see the LCARS listed as "Engineering - Unknown A" is from the bridge engineering station.