Some modern CMSs listed below. Some are paid, some are open source. Mostly PHP but without the baggage of older CMSs like Drupal:

- CraftCMS (PHP): https://craftcms.com/

- Kirby (PHP): https://getkirby.com/

- Statamic (PHP): https://statamic.com/

- October (PHP, Open Source): https://octobercms.com/

- Bolt (PHP, Open Source): https://boltcms.io/

- Wagtail (Python, Open Source): https://wagtail.io/