I was more concerned about your temples since they're usually the first to go and are notoriously hard to recover, but if your hairline was never straight it may be okay in that department. I could see some slight thinning at the very front of your hairline but you seem alright density wise to me, if you're worried about thinning at the front you could shave it and that will reveal all the frontal thinning, provided that it is happening noticeably.
There's always topical finasteride or dutasteride too, you're unlikely to maintain more than 2 to 5 years on minoxidil unless your hair loss is very mild to begin with since it doesn't address the root cause which is the DHT that is damaging your follicles. And men who were naturally born without 5-Alpha-Reductase 2 and thus have lower DHT are actually more muscular than your average guy since they have higher Testosterone. Finasteride will actually boost your Testosterone by 7%-12% too. If it's any relief I had low Testosterone in my ECLA blood tests and that prompted me to start taking 1 mg Finasteride thrice a week, it's been a month already and everything's alright so far. Haven't noticed any difference in my workouts either and I exercise five times a week.
Also, you could get a scalp biopsy too. That will be seen by a professional and they could tell you if you have MPA and which areas are affected.