Cowboys specific/related (in no particular order):
1.) Cowboys Sports Radio app. BTB podcast my favorite on there but updates throughout the week with new content. During the season will have more contributors as well. Only slight complaint is that you can't download from the app to listen to later so you must have some sort of data/internet connection to listen
2.) Locked on Cowboys. Hosted by Marcus Mosher who just took over. So far has done a nice job on his positional breakdown series. 5 shows a week. Marcus does good work with his analysis and am looking forward to where he goes. (He has known to be somewhat of a pessimist during games on twitter however haha)
3.) How 'Bout Them Podcast. Hosted by Landon McCool. Currently doing one show a week during the offseason but does two during season. Takes a more in depth x's and o's view but not so much that it would be hard to follow for casual follower. Landon also does BTB podcast so sometimes similar content but still very enjoyable to me
4.) DC.com podcasts which you already listen to.
5.) Doomsday podcast. Hosted by Matt Mosley and Ed Werder. Have done a good job getting big names to interview. Still new so not sure how it will be during the season.
NFL in general
1.) Ross Tucker Football Podcast. Very well structured throughout regular season(5 shows a week with a theme for each day). Hit or miss depending on preferences during the offseason (as many are). Also check out his fantasy feast and college draft podcasts if you're so inclined.
2.) The Ringer NFL show. Generally good insight and well thought out points.
3.) MMQB 10 Things Podcast. Currently doing top 10 by position series for the offseason which I find entertaining (even if I disagree with some of the rankings). Also pretty good throughout the season
4.) NFL.com Podcasts. (Around the NFL Podcast, Dave Dameshek Football Program, Move the Sticks) Has a little something for everyone. Not super x's and o's driven but they manage to keep it pretty interesting.
I've also found 2 more that I haven't gotten a chance to listen to all that much
1.) NFL Rants and Raves podcast. Host is a cowboys fan, seems to do a weekly picks show during season.
2.) CBS Roughing the Passer Podcast. Just downloaded an episode from last season but haven't gotten around to listening to it just yet.