Here are the iWeb search results for an attempt to get double hyphenated nouns:
*-*_N
*Note that many of these results may be adjectives. Most of these will be at the very least B2.
1 ONE-OF-A-KIND 40130
2 STEP-BY-STEP 23794
3 MOTHER-IN-LAW 22141
Your mother-in-law invited me.
4 BROTHER-IN-LAW 21775
5 SON-IN-LAW 20170
6 SISTER-IN-LAW 17571
7 EDITOR-IN-CHIEF 16723
8 FATHER-IN-LAW 15822
9 STATE-OF-THE-ART 14253
10 FIVE-YEAR-OLD 12922 Unlisted in the English Vocabulary Profile.
They‘re at sea for months at a time,
and even when they‘re on board,
to what a five-year-old would take for granted,
the Internet.
11 POINT-OF-SALE 12678
12 RIGHT-OF-WAY 12448
13 DAUGHTER-IN-LAW 11640
14 SIX-YEAR-OLD 10890
15 COMMANDER-IN-CHIEF 10342
16 POINT-TO-POINT 10250
17 BACK-TO-BACK 9785
18 CUL-DE-SAC 9685
19 NOT-FOR-PROFIT 8762
20 CHICK-FIL-A 8475
22 EASE-OF-USE 7735
23 ON-THE-FLY 7486
25 PICK-ME-UP 6474
26 YEAR-OVER-YEAR 6354
27 CALL-TO-ACTION 6250
28 MAKE-A-WISH 6055
29 SO-AND-SO 6014
30 OVER-THE-COUNTER 5747
31 WORD-OF-MOUTH 5696
32 STOKE-ON-TRENT 5463
33 PAY-PER-VIEW 5375
34 BAND-IN-A-BOX 5155
35 YEAR-TO-DATE 5134
36 FREE-FOR-ALL 5088
37 WORK-IN-PROGRESS 4948
38 MAR-A-LAGO 4860
39 POINT-OF-VIEW 4818
40 PORT-AU-PRINCE 4782
42 PEER-TO-PEER 4597
43 ONE-YEAR-OLD 4555
44 BACK-TO-SCHOOL 4495
45 ONE-STOP-SHOP 4482
46 FIRST-OF-ITS-KIND 4439
47 TUG-OF-WAR 4354
48 OUT-OF-POCKET 4305
49 SOFTWARE-AS-A-SERVICE 4235
50 TIME-TO-TIME 4160
51 –THOMAS 4132
52 PLAY-BY-PLAY 4058
53 COST-OF-LIVING 4028
54 YU-GI-OH 3811
55 MERRY-GO-ROUND 3726
56 25-YEAR-OLD 3612
57 23-YEAR-OLD 3610
58 24-YEAR-OLD 3603
59 TWO-YEAR-OLD 3569
60 END-OF-LIFE 3484
61 FOUR-YEAR-OLD 3384
62 RIGHTS-OF-WAY 3365
63 TOE-TO-TOE 3359
64 26-YEAR-OLD 3352
65 PRICE-TO-EARNINGS 3338
66 STRATFORD-UPON-AVON 3329
67 SIDE-TO-SIDE 3296
68 22-YEAR-OLD 3290
69 TRICK-OR-TREATING 3228
70 MOTHER-OF-PEARL 3199
71 OVER-THE-TOP 3194
72 MOM-AND-POP 3154
73 DO-IT-YOURSELF 3148
74 FREE-TO-PLAY 3091
75 27-YEAR-OLD 3078
76 OUT-OF-THE-BOX 3020
77 21-YEAR-OLD 2962
78 28-YEAR-OLD 2930
79 RIGHT-TO-LEFT 2902
80 19-YEAR-OLD 2898
81 SISTERS-IN-LAW 2842
82 20-YEAR-OLD 2793
83 RENT-A-CAR 2774
84 TEXT-TO-SPEECH 2727
85 NIAGARA-ON-THE-LAKE 2695
86 18-YEAR-OLD 2679
87 29-YEAR-OLD 2637
88 NOT-FOR-PROFITS 2636
89 BROTHERS-IN-LAW 2633
90 SECOND-IN-COMMAND 2608
91 BRICKS-AND-MORTAR 2597
92 DAUGHTERS-IN-LAW 2577
93 LOAN-TO-VALUE 2530
94 COAST-TO-COAST 2529
95 NET-A-PORTER 2467
96 ATTORNEY-IN-FACT 2421
97 30-YEAR-OLD 2399
99 YYYY-MM-DD 2378
100 OUT-OF-FOCUS 2360