When shopping for an e-bike, I wasn't able to find one with everything I wanted. I eventually found one with most of my requirements except the handlebars. The OEM bars were the "moustache" back swept cruiser style which were too low and quite uncomfortable.
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After some experimentation, I replaced them with 2.5" rise Jones H bars. I added this 6" Delta riser that gave me the height I need.
Although quite sturdy, I wouldn't consider this combination for serious downhill or single track though.
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Amazon.com : Bike Stem Raiser Handlebar Extender by Delta Cycle - Increases Bar Height Up to 4.6" - Riser Adapter for Mountain Bike (MTB), Hybrid, Road Bike, with Durable Aluminum Construction : Bike Stems And Parts : Sports & Outdoors
www.amazon.com
The combination has worked well for me since 2018 with only minor tweaks to the height setting.
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