Presumably not having the Sopranos in because the first series was in 1999 (thus ignoring the other 5 that followed in the 21st Century) seems a bit off.
"In total, 460 different series were voted for by 206 TV experts – critics, journalists, academics and industry figures – who came from 43 countries, from Albania to Uruguay. Of these voters, 100 were women, 104 were men, and two were non-binary. Each voter listed their 10 favourite TV series of the 21st Century, which we scored and ranked to produce the top 100 listed below."
1 The Wire (2002-2008) 2 Mad Men (2007-2015) 3 Breaking Bad (2008-2013) 4 Fleabag (2016-2019) 5 Game of Thrones (2011-2019) 6 I May Destroy You (2020) 7 The Leftovers (2014-2017) 8 The Americans (2013-2018) 9 The Office (UK) (2001-2003) 10 Succession (2018-) 11 BoJack Horseman (2014-2020) 12 Six Feet Under (2001-2005) 13 Twin Peaks: The Return (2017) 14 Atlanta (2016-) 15 Chernobyl (2019) 16 The Crown (2016-) 17 30 Rock (2006-2013) 18 Deadwood (2004-2006) 19 Lost (2004-2010) 20 The Thick of It (2005-2012) 21 Curb Your Enthusiasm (2000-) 22 Black Mirror (2011-) 23 Better Call Saul (2015-2022) 24 Veep (2012-2019) 25 Sherlock (2010-2017) 26 Watchmen (2019) 27 Line of Duty (2012-2021) 28 Friday Night Lights (2006-2011) 29 Parks and Recreation (2009-2015) 30 Girls (2012-2017) 31 True Detective (2014-2019) 32 Arrested Development (2003-2019) 33 The Good Wife (2009-2016) 34 The Bridge (2011-2018) 35 Fargo (2014-) 36= Downton Abbey (2010-2015) 36= Band of Brothers (2001) 38 The Handmaid's Tale (2017-) 39 The Office (US) (2005-2013) 40 Borgen (2010-2022) 41 Schitt's Creek (2015-2020) 42 Peep Show (2003-2015) 43 Money Heist (2017-2021) 44 Community (2009-2015) 45 The Good Fight (2017-) 46 Homeland (2011-2020) 47 Grey's Anatomy (2005-) 48 Inside No 9 (2014-) 49 The Bureau (2015-) 50 Halt and Catch Fire (2014-2017)
No way that X-Files is going to be classed as a 21st Century show unless they judge the 'special event' series as separate like with Twin Peaks. But I don't think that'd be troubling the top 100 anyway if so.