Help to diagnose LH Front noise

Whirring noise in the front (unchanged if in neutral) have replaced wheel bearing and upper ball joint Hiace supercustom 1994 2wd automatic

It’s a whirring wom wom noise above 30km, disappears at 60km in the front LH. Is unaffected by turning corners, unaffected by shifting in to neutral. It’s not too loud, but I can hear it over the stereo. It’s a whirring humming, not a squealing or grinding, it changes a bit in pitch and speed but not too much. Had several people listen to different areas of the van who all think it’s coming from LH front. I was hoping it was wheel bearing/upper ball joint, the rubber gasket of the joint had torn and it had a lot of play, bearing had a bit of play, but I replaced both and the noise continues. I also got four new tires so it’s not tire cupping making the noise. What else can I check in that area? Is there another bearing (I’m a very diy mechanic) Is it possible the noise is carrying from the RH? Is it possible it’s a drive velocity joint? Would that still whirr at the same pitch when it’s flicked into neutral ? Thanks for reading and much appreciation of any answers.

There are no other drive joints or bearings in the front of a 2WD. Sounds like it maybe might perhaps could be a flapping/vibrating shield or rubber mud flap caused by wind/airflow. Each side in the wheel well also has those rubber access flaps. One of mine occasionally clatters at certain speeds in certain winds.
The key point is whether it modulates directly with road speed or engine revs. What you said about neutral & pitch & speed indicates it doesn’t really, so its likely a resonance from something else like airflow.

LH front - where the cabin air intake fan is?

There are no CV joints as far as I know, solid rear axle, UJs to the gearbox - diff..

Hi and thanks for your replies. Here is an update. After replacing a wheel bearing and an upper ball joint and then u joints both sides of the drive shaft, I noticed the passenger door wasn’t shutting properly, gave it a good slam, and hey presto, No Noise!!!! Omg...

Been there done that got the tee shirt do not tell anyone !!!

Problem solved!

At least the new bits are good for a few hundred thousand miles now!