I assume you are looking for a "trawler" with V berth sleeping and minimal galley and head facilities. The 25' diesel trawler market is mostly made up of downeast type boats.
Sisu, Eastern, Seaway, Rosborough and Atlas Acadia are several builders. I owned a 23' outboard Atlas Acadia for several years, but their 25' model is diesel powered. Here is a nice one: https://www.boattrader.com/boat/1998...ia-25-7938259/
The other type of boat to look for is the express cruisers. I think the Grady White 25'er has cabin facilities but it is outboard powered.