The Race Face Atlas 35 handlebar is a great choice for trail riding, offering a more aggressive posture for descending without compromising comfort and control too much on the climbs.
The Hope 35mm carbon handlebars are recommended for trail and all-mountain use with an 800mm width, 20mm rise, 5° of upsweep, 7° of backsweep, and a weight of 225g.
Foam grips don't sound terribly exciting, and in the past I've completely dismissed them for a whole bunch of reasons. But after testing some, it turns out they are pretty comfortable.
PNW's Coast gravel handlebar and stem are much wider than a conventional drop bar, helping off-road riders feel more comfortable on their drop bar, off-road bike.