Hi DJ Moon
Companies may put a lot of names for a lot of solutions, but I will talk to you from the reality of the actual work and the experiences I was exposed to, and of course you have the right to review what I write and make sure of it by searching the Internet.
From my point of view, MDM is the most comprehensive way to deal with mobile phones and tablets
Endpoint usually includes the rest of the devices, such as laptops, desktops, etc
Microsoft is good at dealing and managing its applications and Office 365 applications on all devices, but there are many features and advantages that are not present in dealing with applications from Third Party
So, for example, you will find a company like MangeEngine that offers you solutions for mobile devices, tablets, and other solutions for devices such as laptops and desktops.
for endpints you can customize the group policy and the user rights also you can configure windows to work as kiosk mode (Mutiple app not single app) and use any remote desktop support such as anydesk https://anydesk.com/en.
https://learn.microsoft.com/en-us/windows/configuration/lock-down-windows-10-to-specific-apps
https://www.manageengine.com/mobile-device-management/mdm-kiosk-mode-purpose-built-devices.html?network=g&device=c&keyword=windows%2010%20kiosk&campaignid=10434736285&creative=490530018360&matchtype=p&adposition=&placement=&adgroup=116221313956&targetid=kwd-359383316148&gclid=CjwKCAjw1MajBhAcEiwAagW9MeCEM8iHGN5PPu9ocAG_WVuSfJA-artvqpiz-9A_GrxgK9Lnr8VLBBoCIXEQAvD_BwE
also look at this:
https://www.samsungknox.com/en
solution for education:
https://www.esper.io/solutions/education
managengine new product:
https://www.manageengine.com/products/desktop-central/?pos=MDMPlus&loc=ProdMenu&cat=UEMS