Hello OP. I live in Crystal City and I've worshipped in many parishes in arlington, alexandria, dc, and md.. Of course, some parishes may be stronger in certain areas, just as a particular priest may be a phenomenal teacher or speaker... or not and instead contributes something else to the Church. IMHO each gift or work a particular parish, clergy, or layperson does builds up the Church, the body, and so it's OK if one parish has ho-hum homilies or you aren't into the music or you think they focus too much on X and not y, etc... but I would hesitate to get political in the Church and here's why...
It potentially can divide people and then we lose sight of the gospel and the truth. A Catholic should be able to go into any parish in the world, regardless of language or culture or politics and experience the unity of faith. I know I've been to countries were I can't understand barely anything but I experience the same mass. I've been to parishes that have tons of resources and programs and others that don't have much. Some have professional level music and others are more humble. Some clergy have passion and can teach with such power that you gain insight into spiritual matters and others may be weaker teachers and even boring. I love them all! They are all a part of us and us in them. We all have differe t spiritual gifts. We are a family and attending mass is not entertainment or a chance to surround ourselves with people who hold similar politics. I'm not saying you do this but felt compelled to share.

I understand you aren't Catholic yet but wanted to give you a Catholic perspective, at least mine.

I highly recommend you attend a RCIA class. Also, the Catholic institute of culture is a great resource and I would attend mass at various parishes, as it seems you plan to do anyway. I personally benefit from attending mass in different locations but see the value in finding a single home parish. The arlington diocese has a mass finder and you can type in any day and time and find a mass here in arlington or if that doesn't work- the district.