In 2014 alone, AKA a decade ago which was your beginning reference point, Jones secured his 7th title defence with a dominant decision over Glover who was on a 9 year unbeaten streak. Then has since won another 9 title fights.
Yes, I rather do submit that Jones AT LEAST is above Islam as the most skilled fighter from within the past decade. So should everybody. Jon's at 17 and Islam's at 4.
Let alone that Mighty Mouse, Aldo, Cormier, etc., were still dominant back then and hadn't lost yet, then another wave of guys like Islam's own coach Khabib who was active until 2021. Hell, Usman, Israel, volk himself, Stipe, Valentina, all went on historical runs too. Even GSP took a fight in 2017 for dual champ which qualifies him for the last decade.
An absolutely insane claim to say Islam's the most skilled since 2014.