Yes, the hub is identical
Same 5x108 PCD and same 63.4 mm centre bore: wheels from Volvo EX90 axe avant bolt on and centre on Jaguar XF without rings. You still need to check the offset and tyres, detailed below.
≈: width estimated from the original tyre size.
Wheel by wheel: offset and tyres
Each original wheel from Volvo EX90 axe avant is compared with the one from Jaguar XF of the same diameter: how much closer the wheel gets to the shock absorber or how far it sticks out of the wheel arch, and whether the tyre keeps the same overall diameter.
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8.5Jx20 ET40.5 · 255/50R20 — Check on the car
Compared with the original ≈8Jx20 ET49 on Jaguar XF: shock absorber side −2.2 mm, wheel arch side +14.9 mm, tyre diameter +11.1 % : fit it with the original tyre size of Jaguar XF (255/35R20), not that of Volvo EX90 axe avant.
Comparison for guidance only (estimated width). Check in detail
Before fitting the wheels
An identical hub is not enough: offset, width and diameter change the position of the wheel, and larger calipers can touch a smaller wheel. Original wheels often use bolts or nuts with a specific seat: keep the fixings intended for the wheel, with the thread of Jaguar XF (Ecrous - 12x1.50), tightened to the torque shown on its vehicle page. Finally, check that the size is among the approved fitments for your vehicle. This comparison is for guidance only: have the fitting approved by a professional.
And the other way round: wheels from Jaguar XF on Volvo EX90 axe avant?