Essentially, the D1X can use all Nikon lenses, AI onwards, which in essence means just about everyone out there, as the pre AI lenses are very rare, and you probably wouldn't want to se one anyway.
All lenses, AI onwards will work in Aperture priority, and in Manual, and you'll still be able to use the meter.
Here is a reasonably complete list:
D-type AF Nikkor: All functions possible
D-type Manual-Focus Nikkor: All functions except autofocus possible
AF Nikkor other than D-type: All functions except 3D Color Matrix Metering and 3D Multi-Sensor Balanced Fill-Flash for D1-series possible
AI-P Nikkor: All functions except 3D Color Matrix Metering, 3D Multi-Sensor Balanced Fill-Flash for D1 and auto-focus possible
Non-CPU (AI, AIS, and AI converted) Usable in [A] or [M] mode Center-Weighted or Spot Metering; Electronic Rangefinder usable with lens with maximum aperture of f/5.6 or faster