Lindsay is a more common tartan and at the games I've been to they usually have a good selection of Lindsay items. If you are looking good for quality and fit you may want to have your tartan items made vs off the rack. You'll get a better fit and usually much higher quality too. Another good thing to do is get involved with the Clan Linsday Society.
Unfortunately in the Northeast USA they aren't very active. If you have an interest in their history sponsor a clan tent at your local games.
Traditionally, Clan Lindsay and us Donnachaidhs were were at odds but we've had quite a good time with them over the years. Many of them actually attended our annual clan dinners!