Unmeshed.io is a newer startup in the space - and works like a charm. Temporal seems like more targeting durable executions, but scheduling a different game. It starts with crons but soon you got to deal with holidays, adhoc skips and holds and more especially during maintenance and upgrades.

Unmeshed has all of these, managing holiday calendars etc and makes it super easy. It even has agents for AS400 server commands if that is still a thing you need.