A used Surly Ogre fits your needs pretty well. It's a rigid mountain bike with a lot of hybrid features and many ways to build it up. A Karate Monkey or Krampus are similar, but more trail focused. Especially the older builds of KM for you, the current ones have suspension forks and dropper post and are a lot more expensive.
$1000 is a tough ask for a decent mountain bike any more. You are looking at something with maybe no dropper and a really compromised suspension fork. The Cannondale recommended above is a dead end for upgrades due being built to old standards.
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Genesis 49:16-17