According to FBref we're 15th in xG, 16th in xGA and 16th in xGD. We're 5th at the moment.
In the admittedly brief history of xG since 2017, only 17/18 Burnley enjoyed this kind of a trend of overachivement over the course of a full season. They were 18th in xG, 13th in xGA, and 17th in xGD while finishing 7th. Similar but not as extreme cases are:
23/24 United: 10th in xG, 16th in xGA, 15th in xGD, 8th place
23/24 West Ham:13th in xG, 18th in xGA, 16th in xGD, 9th place
24/25 Forest: 15th in xG, 9th in xGA, 13th in xGD, 7th place
Other major leagues have some rare cases of their own, including but not exclusively:
22/23 Union Berlin- 17th in xG, 3rd in xGA, 12th in xGD, 4th place
19/20 Nice- 7th in xG, 18th in xGA, 15th in xGD, 5th place
Let's just say that we're trying to make history at the moment.