The Elden Ring: Shadow of the Erdtree DLC has a bunch of new Spirit Ashes for players to try out in battle. Here's one you can get early when starting the DLC.
How to Get the BEST Spirit Summons Early – Famous Ashes Location & Upgrade Guide – Elden Ring!
The first Spirit Ashes you can get in the DLC is the Demi-Human Swordsman Yosh. You can find these Spirit Ashes in the Belurat Gaol, north of the Greatbridge North Site of Grace, in the first area of the DLC. You'll need to cross a lake from the Site of Grace to reach the entrance to the Gaol. There's also a Ghostflame Dragon in that lake, but it's pretty much harmless as it mainly deals damage when you're really close to it.
The path to the Demi-Human Swordsman Yosh is fairly linear, as you have to go to the bottom of Belurat Gaol and defeat the boss to get him. First, keep following the linear path until you reach an opening on the right. Go through that right opening.
Keep moving forward and you will find a room with some hanging Jars leading to the floors below. Go down using the Jars and you will come to a bridge. Large and small Jar enemies will try to attack you so keep moving fast or take them out. Go left of the bridge using the stairs and you will see them fall apart and you will fall. This is normal as you will have to move forward to get out of the area.