By alexa:
http://themeforest.net/category/wordpress?ref=proiulia 173
http://www.elegantthemes.com/ 1526
http://woothemes.com/ 1875
http://mythemeshop.com/ 4644
http://themify.me/ 8217
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http://www.elmastudio.de/en/ 24672
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http://catchthemes.com/ 29885
http://nimbusthemes.com/ 31115
http://oboxthemes.com/ 33473
http://themezee.com/ 34224
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http://www.gabfirethemes.com/ 36416
http://www.mageewp.com/ 39483
http://organicthemes.com/ 41378
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http://theme4press.com/ 55983
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http://themehybrid.com/ 71969
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http://www.sktthemes.net/ 84688
http://themefurnace.com/ 87285
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http://www.photocrati.com/ 101111
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http://www.themelab.com/ 105373
http://templateexpress.com/ 106310
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https://array.is/ 136095
http://www.organizedthemes.com/ 147139
http://bizzthemes.com/ 149029
http://www.vpthemes.com/ 162689
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http://themekraft.com/ 175306
http://wpcasa.com/ 179883
http://www.vivathemes.com/ 186619
http://nicethemes.com/ 199777
http://www.klasikthemes.com/ 203481
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http://fruitthemes.com/ 262755
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http://www.themealley.com/ 363671
https://foxland.fi/ 389549
http://themehaus.net/ 420172
http://dinevthemes.com/ 453714
http://pixelthemestudio.ca/ 538305
http://shapedpixels.com/ 639114
http://wpgothemes.com/ 865143
https://startupwp.com/ 1004194
http://www.themeweaver.net/ 1112709
http://serenethemes.com/ 1232771
http://fimply.de/ 1527214
http://themejam.com/ 1854145
http://www.themeszen.com/ 2435978
https://themeora.com/ 6100787