Not your conventional task manager but I use Trello and am very happy with it. Was previously a Todoist user but they recently cut their free plan to allow 5 projects only and I’m not in the market for a paid todo app right now.
You did say you weren’t interested in Kanban-style design, but I wanted to point out that you could use Trello’s kanban system to do priorities. Trello’s tag system also supports inline viewing. But if Kanban is a deal-breaker then I’d recommend Todoist, provided you can pay for it/you don’t use more than 5 projects