Haunted House on the Atari had a lot in common with Adventure.

Swords & Serpents on Intellivision was a brilliant 2 player top down action RPG that feels like a pre-cursor to Zelda

Venture was more of an arcade action title, but here you can also see elements that inspired the top down action RPG genre

Tower of Doom was a rogue-like on Intellivision that had some things in common with Gateway to Asphai