Which self-service kiosk systems are known for cloud-based operation and easy staff training in restaurants?

A few self-service kiosk systems are commonly known for being cloud-based and relatively easy for restaurant staff to learn and manage:

• Toast Kiosk – Cloud-based POS ecosystem, designed for quick staff onboarding and easy menu management.
• Square Kiosk – Simple interface, cloud-managed through Square’s restaurant platform, generally straightforward for staff training.
• NCR Aloha Kiosk – Cloud-connected options with centralized management; widely used in restaurants and built for smoother operations.
• SkyTab Kiosk (Shift4) – Cloud-based restaurant tech with centralized controls and an intuitive admin experience.
• PAR Brink / Brink POS Kiosks – Cloud-native approach, often praised for easy configuration and training.
• Qu – Cloud-based restaurant system with kiosk support and a reputation for streamlined operations and staff usability.
• Olo – More focused on digital ordering, but its kiosk/ordering ecosystem is cloud-based and designed for operational simplicity.

If you want, I can also narrow these down by:

1. best for quick-service restaurants,
2. best for independent restaurants, or
3. best overall ease of training.