You have covered the rear wheel bearings, and it isn’t hard to check the front. Jack up the car enough to get the front wheels off the ground and support the car using jacks or just cinderblocks. Try to move each wheel top to bottom and left to right. If either wheel moves, that wheel needs a wheel bearing and perhaps the axle replaced as well.
This is an easy test and worth doing.
But actually you probably have a sticky rear brake caliper. This you can test by jacking up the rear of the car and rotating each wheel. If you hear a sound during each rotation, the caliper for that wheel is not retracting enough to prevent the brake pad from rubbing along some uneven spot (or all) of the rotor. Usually you will hear a sound once for a short duration once during each roation of the wheel.