Yomichan supports the use of custom dictionaries, including the esoteric but popular EPWING format. They were often utilized in portable electronic dictionaries similar to the ones pictured below. These dictionaries are often sought after by language learners for their correctness and excellent coverage of the Japanese language.
Unfortunately, as most of the dictionaries released in this format are proprietary, they are unable to be bundled with Yomichan. Instead, you will need to procure these dictionaries yourself and import them using Yomichan Import. Check the project page for additional details.
Google [tatsumoto yomichan dictionary]. On the site you will find some “creative” sources for some files you can import into your yomichan if they are to your liking.
You can waste quite some time on that setup so going with something basic first and seeing how you like it is probably the way to go.