Closest thing to Xavi imo are Modric and Verratti. I haven't seen Kroos control the tempo of games in the way those 2 do. They have better movement off the ball, are more agile, better dribblers and are able to control games on their own (it's no coincidence PSG beat us with Verratti bossing the midfield, and RM looked the better side with Modric playing brilliantly in the 1st half of the Clasico).
Kroos reminds me more of Xabi with a little bit of Lampard/Gerrard, a much more static player, but a better finisher and shooter from distance, with pinpoint passes, longs balls especially.