Is there a way to get a list of all fields with their types? The export function in the fields screen only exports the field names and labels.
The export function only gives you Field names and Labels. If you want to see the field type, you'll have to do this manually by clicking on the field. You'll get details like Type, List Import Alias, CRM Field Map, Block Updates From and Field Used By.
Another way to find out the field length is to follow the "Field Used By" option. If it's been used in a form, you can easily get the filed details from inside the form editor.
You can also submit a support ticket and Marketo will create such a list of fields with the following:
|Attribute ID||Attribute Name||Attribute Display Name||Field Type||Data Type||length||Object Id||Object Name||Attribute Map ID||Attribute Map Name||API Name||
Attribute Map Display Name
Hope this helps. I know it helped me.