In a follow up to Frode's awesome list of Column Field ID's, here is a quick list of Content Type ID's. These were all fetched from our dev server using Powershell. If you don't have Powershell, shame on you.
Why is this list not-so-spectacular? Because it breaks my site layout unless you have a super widescreen monitor, it's hard to read and it's in an ugly font. Also, there's a bunch of blogs out there which also has it. Google Content Type IDs and you'll see. Downloadable formats are available at the bottom of the page for those who wants a local copy (that's also easier to read).
| Name | ID | Description | Group |
| System | 0x | _Hidden | |
| Item | 0x01 | Create a new list item. | List Content Types |
| Reusable HTML | 0x01002CF74A4DAE39480396EEA7A4BA2BE5FB | Reusable HTML | _Hidden |
| Reusable Text | 0x01004D5A79BAFA4A4576B79C56FF3D0D662D | _Hidden | |
| Page Output Cache | 0x010087D89D279834C94E98E5E1B4A913C67E | Page Output Cache is a system content type template created by the Publishing Resources feature to define cache profiles. | _Hidden |
| Document | 0x0101 | Create a new document. | Document Content Types |
| System Page Layout | 0x01010007FF3E057FA8AB4AA42FCB67B453FFC1 | System Page Layout is a system content type template created by the Publishing Resources feature, and it cannot be modified. To add columns to page layouts in the page layouts gallery and master page gallery, update the Page Layout content type template. | _Hidden |
| Page Layout | 0x01010007FF3E057FA8AB4AA42FCB67B453FFC100E214EEE741181F4E9F7ACC43278EE811 | Page Layout is a system content type template created by the Publishing Resources feature. All page layouts will have the column templates from Page Layout added. | Publishing Content Types |
| System Master Page | 0x0101000F1C8B9E0EB4BE489F09807B2C53288F | System Master Page is a system content type template created by the Publishing Resources feature, and it cannot be modified. To add columns to master pages in the page layouts gallery and master page gallery, update the Master Page content type template. | _Hidden |
| Publishing Master Page | 0x0101000F1C8B9E0EB4BE489F09807B2C53288F0054AD6EF48B9F7B45A142F8173F171BD1 | Master Page is a system content type template created by the Publishing Resources feature. All master pages will have the column templates from Master Page added. | Publishing Content Types |
| Office Data Connection File | 0x010100629D00608F814DD6AC8A86903AEE72AA | _Hidden | |
| Universal Data Connection File | 0x010100B4CBD48E029A4AD8B62CB0E41868F2B0 | Provide a standard place for applications, such as Microsoft Office InfoPath, to store data connection information. | _Hidden |
| System Page | 0x010100C568DB52D9D0A14D9B2FDCC96666E9F2 | System Page is a system content type template created by the Publishing Resources feature, and it cannot be modified. To add columns to the Pages library, update the Page content type template. | _Hidden |
| Page | 0x010100C568DB52D9D0A14D9B2FDCC96666E9F2007948130EC3DB064584E219954237AF39 | Page is a system content type template created by the Publishing Resources feature. The column templates from Page will be added to all Pages libraries created by the Publishing feature. | Publishing Content Types |
| Article Page | 0x010100C568DB52D9D0A14D9B2FDCC96666E9F2007948130EC3DB064584E219954237AF3900242457EFB8B24247815D688C526CD44D | Article Page is a system content type template created by the Publishing Resources feature. It is the associated content type template for the default page layouts used to create article pages in sites that have the Publishing feature enabled. | Page Layout Content Types |
| Welcome Page | 0x010100C568DB52D9D0A14D9B2FDCC96666E9F2007948130EC3DB064584E219954237AF390064DEA0F50FC8C147B0B6EA0636C4A7D4 | Welcome Page is a system content type template created by the Publishing Resources feature. It is the associated content type template for the default page layout used to create welcome pages in sites that have the Publishing feature enabled. | Page Layout Content Types |
| Redirect Page | 0x010100C568DB52D9D0A14D9B2FDCC96666E9F2007948130EC3DB064584E219954237AF3900FD0E870BA06948879DBD5F9813CD8799 | Redirect Page is a system content type template created by the Publishing Resources feature. It is the associated content type template for the redirect page layout | Page Layout Content Types |
| InfoPath Form Template | 0x010100F8EF98760CBA4A94994F13BA881038FA | A Microsoft Office InfoPath Form Template. | _Hidden |
| Form | 0x010101 | Fill out this form. | Document Content Types |
| Picture | 0x010102 | Upload an image or a photograph. | Document Content Types |
| Unknown Document Type | 0x010104 | Allows users to upload documents of any content type to a library. Unknown documents will be treated as their original content type in client applications. | Special Content Types |
| Master Page | 0x010105 | Create a new master page. | Document Content Types |
| User Workflow Document | 0x010107 | Items for use in user defined workflows. | _Hidden |
| Wiki Page | 0x010108 | Create a new wiki page. | _Hidden |
| Basic Page | 0x010109 | Create a new basic page. | Document Content Types |
| Web Part Page | 0x01010901 | Create a new Web Part page. | Document Content Types |
| Link to a Document | 0x01010A | Create a link to a document in a different location. | Document Content Types |
| Dublin Core Columns | 0x01010B | The Dublin Core metadata element set. | Document Content Types |
| Event | 0x0102 | Create a new meeting, deadline or other event. | _Hidden |
| Issue | 0x0103 | Track an issue or problem. | List Content Types |
| Announcement | 0x0104 | Create a new news item, status or other short piece of information. | List Content Types |
| Link | 0x0105 | Create a new link to a Web page or other resource. | List Content Types |
| Contact | 0x0106 | Store information about a business or personal contact. | List Content Types |
| Message | 0x0107 | Create a new message. | List Content Types |
| Task | 0x0108 | Track a work item that you or your team needs to complete. | List Content Types |
| Workflow Task | 0x010801 | A work item created by a workflow that you or your team needs to complete. | _Hidden |
| Office SharePoint Server Workflow Task | 0x01080100C9C9515DE4E24001905074F980F93160 | A work item created by a workflow that you or your team needs to complete. | _Hidden |
| Administrative Task | 0x010802 | An administrative work item that an administrator needs to complete. | _Hidden |
| Workflow History | 0x0109 | The history of a workflow. | _Hidden |
| Person | 0x010A | _Hidden | |
| SharePointGroup | 0x010B | _Hidden | |
| DomainGroup | 0x010C | _Hidden | |
| Post | 0x0110 | Create a new blog post. | _Hidden |
| Comment | 0x0111 | Create a new blog comment. | _Hidden |
| Far East Contact | 0x0116 | Store information about a business or personal contact. | List Content Types |
| Folder | 0x0120 | Create a new folder. | Folder Content Types |
| RootOfList | 0x012001 | _Hidden | |
| Discussion | 0x012002 | Create a new discussion topic. | Folder Content Types |
Have fun customizing!
 content_id.csv | [Content Type IDs - csv format] | 5 Kb | Jul-17-2008 10:11am |
 content_id.xls | [Content Type IDs - xls format] | 32 Kb | Jul-17-2008 10:12am |
