Which Google analytics Tags are allowed in GTM or supported by GTM?

Google Tag Manager makes it easier to implement some of the more complicated Google Analytics features, such as User ID tracking. User ID tracking gives you the ability to measure real users instead of devices. This provides more accurate data for you, which ultimately helps your users! It’s a win-win. Tag Manager also helps with common challenges in Google Analytics, such as Custom Dimensions, Cross-Domain Tracking for multiple sites that are tracked together in Google Analytics, and Enhanced Ecommerce that requires collaboration with developers

• Page View, the basic Google Analytics tag that should fire on every page of the site.
• Event, used to track a specific action or event, such as a button click.
• Cross-domain Tracking for Link, deprecated: use Decorate Link instead.
• Cross-domain Tracking for Form Post, deprecated: use Decorate Form instead.
• Transaction, used to track an ecommerce transaction.
• Social, used to track social interactions.
• Timing, used to track loading speeds on your site.
• Decorate Link; see Cross Domain Tracking for usage example.
• Decorate Form; see Cross Domain Tracking for usage example.