* Luigi -- extensive usage (4y+)
* Makefiles -- (15y+)
* GitHub Actions -- (4y+)
* Airflow -- little usage (<6 months)
* Dagster -- very little, just trying it out
* Prefect -- just followed tutorial
Although it lacks a lot of the monitoring and advanced web ui other platforms have (maybe because of it), Luigi is the simplest to reason about IMHO.
For a new project that will require complex orchestrations, I'd probably go with Dagster or Prefect nowadays. Dagster seems more complex and more powerful with its data lineage functionality, but I have very little experience with either tool.
If it's a simple project, a mix of Makefiles + GH Actions can work well.