You're lying when you say you struggle with the Mudug accent.
The Mudug accent is the default Somali speech, everybody understands it very clearly.
It's the Somali equivalent of the U.S Midwest Accent. All newscaster in the U.S speak with this standard accent and not regional ones in order to be well understood by everybody. Anybody from the U.S who claims to not understand the midwest accent would be laughed at.
Abgaals have a weirdo dialect that sound comical and it's understandable that you don't understand them.
I have a working theory that one of the reasons that Issaks have not achieved the highest political position in Somalia (president) is because your speech is not very clear to most Somalis. I generally have to actively listen to what an Issak person is saying in order to understand, when the Mudug accent's clarity makes it so that people can understand without putting a lot of effort into it


How on earth am I lying, you gotta chill.
It is not about clan, it is about regional variations in accent. I understand your reer Bari speakers more when compared with af-Mudug.
The truth is the HG that border you in Mudug are more similar to you in language than the Dhullos who live in sool. It has nothing to do with clan but region.
An example of this is that Reer Gabiley and Reer Burao which are both Isaaq sound completely different. There is no "Isaaq accent". Someone from Burao is more similar to a Reer Bari MJ speaker than he is to an af-Galbeed speaker from Gabiley.
The language divide in the north actually happens in Hargiesa, everything west and southwest of it which includes the majority of Habar Awal, Gadabursi, Ciise and OG speak af-Galbeed with some clan differences. And everything east and southeast of Hargeisa, including Habar Awal Bari, HY, HJ, Arap and Dhullos speak af-Hawd with again some clan differences. The differences between regions are much larger than clans.
So the idea Isaaq sound the same is not true, as there is a language divide even within Isaaqs
The basic principle of mutual intelligibility is one of relative regional proximity at the end of the day. Ignoring clan, the closer you are geographically, the more easier it will be for you will be able to understand the other speaker.
That is the facts.