You are probably seeing some snow mold, it is mostly cosmetic and will grow out of it quickly with the weather this week
The other without a more detaled picture looks like brown patch, it could be anything.
Fungal disease was everywhere in the mid atlantic and NE, it was rampant, just a perfect season for it
The fungal spores are still around and are just waiting for the temps to climb, it really likes warm still damp environments
The next frontier......is under your feet
You can never change things by fighting the existing reality.
To change something, build a new model that makes the existing model obsolete.