As of 2022-03-07, the Wikidata property Wikimedia username (P4174) is used on 1,791 items as main value on statements (not counting qualifiers) of the Q and P namespaces.

Closest properties: by cardinality of intersection, by Jaccard index.

Display properties of the following types:                                    

Closest properties by cardinality of intersection

IDLabelIntersection cardinalityJaccard index
P2002 Twitter username 637
 0.0020
P214 VIAF ID 575
 0.0002
P7859 WorldCat Identities ID 493
 0.0003
P496 ORCID iD 473
 0.0003
P2013 Facebook ID 442
 0.0019
P2671 Google Knowledge Graph ID 429
 0.0001
P6634 LinkedIn personal profile ID 423
 0.0080
P213 ISNI 328
 0.0002
P244 Library of Congress authority ID 281
 0.0002
P227 GND ID 255
 0.0002
P1960 Google Scholar author ID 231
 0.0040
P2037 GitHub username 218
 0.0237
P646 Freebase ID 203
 0.0000
P2003 Instagram username 187
 0.0012
P1153 Scopus author ID 181
 0.0004
P269 IdRef ID 170
 0.0003
P1207 NUKAT ID 140
 0.0003
P2397 YouTube channel ID 137
 0.0020
P691 NKCR AUT ID 131
 0.0003
P2038 ResearchGate profile ID 129
 0.0024
P1006 Nationale Thesaurus voor Auteurs ID 121
 0.0002
P1053 ResearcherID 120
 0.0005
P268 Bibliothèque nationale de France ID 117
 0.0002
P345 IMDb ID 102
 0.0001
P3829 Publons author ID 99
 0.0015
P4012 Semantic Scholar author ID 95
 0.0023
P2456 DBLP author ID 95
 0.0018
P3608 EU VAT number 83
 0.0074
P7293 PLWABN ID 79
 0.0002
P6963 BaFin Institute ID 76
 0.0268
P1278 Legal Entity Identifier 75
 0.0024
P2627 ISO 9362 SWIFT/BIC code 73
 0.0197
P6178 Dimensions author ID 70
 0.0007
P6744 FragDenStaat public body ID 69
 0.0146
P2963 Goodreads author ID 69
 0.0031
P1015 NORAF ID 64
 0.0004
P8189 National Library of Israel J9U ID 62
 0.0004
P3185 VK ID 61
 0.0064
P3267 Flickr user ID 59
 0.0161
P3065 RERO ID 57
 0.0008
P7400 LibraryThing author ID 55
 0.0050
P2847 Google+ ID 47
 0.0061
P4985 TMDb person ID 46
 0.0002
P648 Open Library ID 45
 0.0002
P4265 Reddit username 42
 0.0163
P4411 Quora username 41
 0.0198
P3789 Telegram username 41
 0.0097
P8179 Canadiana Name Authority ID 38
 0.0007
P271 CiNii author ID (books) 38
 0.0004
P2163 FAST ID 38
 0.0001

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P6963 BaFin Institute ID 76
 0.0268
P2037 GitHub username 218
 0.0237
P4411 Quora username 41
 0.0198
P2627 ISO 9362 SWIFT/BIC code 73
 0.0197
P8754 OpenStreetMap numeric user ID 30
 0.0165
P4265 Reddit username 42
 0.0163
P3267 Flickr user ID 59
 0.0161
P4033 Mastodon address 35
 0.0158
P6744 FragDenStaat public body ID 69
 0.0146
P3899 Medium username 35
 0.0134
P4016 SlideShare username 20
 0.0100
P3789 Telegram username 41
 0.0097
P3258 LiveJournal ID 35
 0.0096
P4232 Figshare author ID 18
 0.0093
P6634 LinkedIn personal profile ID 423
 0.0080
P3608 EU VAT number 83
 0.0074
P6837 Keybase username 13
 0.0070
P5285 Firmenbuchnummer 13
 0.0064
P3185 VK ID 61
 0.0064
P864 ACM Digital Library author ID 28
 0.0062
P2847 Google+ ID 47
 0.0061
P8222 rating.chgk.info ID 13
 0.0053
P4175 Patreon ID 14
 0.0051
P7400 LibraryThing author ID 55
 0.0050
P7171 Hacker News username 9
 0.0048
P2087 Crunchbase person ID 16
 0.0046
P8827 GitLab username 8
 0.0043
P4015 Vimeo identifier 21
 0.0041
P5797 Twitch channel ID 14
 0.0041
P4594 arXiv author ID 8
 0.0040
P1960 Google Scholar author ID 231
 0.0040
P3836 Pinterest username 24
 0.0038
P10149 Original Esperanto Literature author ID 8
 0.0035
P4598 FAPESP researcher ID 8
 0.0033
P4450 HAL author ID 11
 0.0033
P7671 Semion author ID 6
 0.0031
P2963 Goodreads author ID 69
 0.0031
P4862 Amazon author ID 22
 0.0029
P1007 Lattes Platform number 20
 0.0028
P2984 Snapchat username 8
 0.0027
P3943 Tumblr username 14
 0.0026
P5163 Odnoklassniki ID 7
 0.0025
P7176 XING profile ID 5
 0.0025
P2607 BookBrainz author ID 6
 0.0025
P8557 edukado.net Panteono ID 5
 0.0024
P2038 ResearchGate profile ID 129
 0.0024
P1278 Legal Entity Identifier 75
 0.0024
P4012 Semantic Scholar author ID 95
 0.0023
P6023 ResearchGate contributions ID 16
 0.0023
P8964 OpenReview.net profile ID 4
 0.0022