Hi,
As one of the ways you can try attached AutoLISP file which temporary opens drawing LOG file, writes information about layers in the current drawing to it, then closes LOG file.
APPLOAD attached LSP file and use LAY_LST command. You can find LOG file in the folder specified in AutoCAD preferences window (Application tab -> Log File Location):
It will have the name go the drawing from which you executed LISP command with .log extension, you can open it with plain text editor application (TextEdit.app for instance)
You should see something like this in it:
[ AutoCAD - Wed Apr 10 19:11:55 2019 ]----------------------------------------
Layer name State Color Linetype Lineweight
------------------ ----------- ------------------ ------------ ------------
"$_DOOR_MARK" on -P 60 "Continuous" 0.200 mm.
"$TMP" on 51 "Continuous" 0.200 mm.
"0" on -P 7 (white) "Continuous" 0.200 mm.
"AXIS" on -P 7 (white) "CENTER2" 0.150 mm.
"Defects_cracks" on -P 210 "Continuous" 0.050 mm.
"Defpoints" on 7 (white) "Continuous" 0.050 mm.
"Door" on -P 14 "Continuous" 0.090 mm.
"DOOR_MARK" on -P 202 "Continuous" 0.150 mm.
"Elevator" on -P 210 "Continuous" 0.090 mm.
"glass" on -P 151 "Continuous" 0.200 mm.
"Hatch-Brick" on -P 255,19,19 "Continuous" 0.130 mm.
"Hatch-door" on -P 250,0,0 "Continuous" 0.130 mm.
"Hatch_1" on -P 215,26,1 "Continuous" 0.050 mm.
"Hatch_2" on -P 0,0,244 "Continuous" 0.090 mm.
"HID" on -P 3 (green) "HIDDEN2" 0.250 mm.
"IMG" on -P 253 "Continuous" 0.200 mm.
"INFO" on -P 194 "Continuous" 0.200 mm.
"Legend_marks" on -P 202 "Continuous" 0.200 mm.
"OTM" on -P 14 "Continuous" 0.250 mm.
"Petlia" on -P 7 (white) "Continuous" 0.180 mm.
"Roof_01" on -P 154 "Continuous" 0.180 mm.
"Roof_hatch" on -P 151 "Continuous" 0.050 mm.
"signs" on -P 0,39,159 "Continuous" 0.300 mm.
"SIZE" on -P 1 (red) "Continuous" 0.090 mm.
"Stair" on -P 251 "Continuous" 0.200 mm.
"Stoliarka" on -P 14 "Continuous" 0.350 mm.
"Tables" on -P 192 "Continuous" 0.200 mm.
"TMP_OBJ" on 2 (yellow) "Continuous" 0.200 mm.
"WALL" on -P 5 (blue) "Continuous" 0.500 mm.
"WALL_1" on -P 4 (cyan) "Continuous" 0.350 mm.
"WIN" on -P 255 "Continuous" 0.150 mm.
"WIN_1" on -P 14 "Continuous" 0.090 mm.
"WIN_MARK" on -P 202 "Continuous" 0.150 mm.
Current layer: "TMP_OBJ"