diff --git a/mappings/net/minecraft/datafixer/schema/IdentifierNormalizingSchema.mapping b/mappings/net/minecraft/datafixer/schema/IdentifierNormalizingSchema.mapping
index 12fe85ec7e..2c6d4a430b 100644
--- a/mappings/net/minecraft/datafixer/schema/IdentifierNormalizingSchema.mapping
+++ b/mappings/net/minecraft/datafixer/schema/IdentifierNormalizingSchema.mapping
@@ -1,6 +1,9 @@
 CLASS net/minecraft/class_1220 net/minecraft/datafixer/schema/IdentifierNormalizingSchema
+	FIELD field_24652 CODEC Lcom/mojang/serialization/codecs/PrimitiveCodec;
+	FIELD field_24653 IDENTIFIER_TYPE Lcom/mojang/datafixers/types/Type;
 	METHOD <init> (ILcom/mojang/datafixers/schemas/Schema;)V
 		ARG 1 versionKey
 		ARG 2 parent
+	METHOD method_28295 getIdentifierType ()Lcom/mojang/datafixers/types/Type;
 	METHOD method_5193 normalize (Ljava/lang/String;)Ljava/lang/String;
 		ARG 0 id
diff --git a/mappings/net/minecraft/datafixer/schema/Schema2551.mapping b/mappings/net/minecraft/datafixer/schema/Schema2551.mapping
new file mode 100644
index 0000000000..693ac787d9
--- /dev/null
+++ b/mappings/net/minecraft/datafixer/schema/Schema2551.mapping
@@ -0,0 +1,5 @@
+CLASS net/minecraft/class_5301 net/minecraft/datafixer/schema/Schema2551
+	METHOD registerTypes (Lcom/mojang/datafixers/schemas/Schema;Ljava/util/Map;Ljava/util/Map;)V
+		ARG 1 schema
+		ARG 2 entityTypes
+		ARG 3 blockEntityTypes
diff --git a/mappings/net/minecraft/util/dynamic/NumberCodecs.mapping b/mappings/net/minecraft/util/dynamic/NumberCodecs.mapping
new file mode 100644
index 0000000000..8c54802026
--- /dev/null
+++ b/mappings/net/minecraft/util/dynamic/NumberCodecs.mapping
@@ -0,0 +1,13 @@
+CLASS net/minecraft/class_5324 net/minecraft/util/dynamic/NumberCodecs
+	METHOD method_29227 rangedDouble (DD)Lcom/mojang/serialization/Codec;
+		ARG 0 min
+		ARG 2 max
+	METHOD method_29229 rangedInt (II)Lcom/mojang/serialization/Codec;
+		ARG 0 min
+		ARG 1 max
+	METHOD method_29231 createRangedDataResultFactory (DD)Ljava/util/function/Function;
+		ARG 0 min
+		ARG 2 max
+	METHOD method_29232 createRangedDataResultFactory (II)Ljava/util/function/Function;
+		ARG 0 min
+		ARG 1 max
diff --git a/mappings/net/minecraft/util/math/MathHelper.mapping b/mappings/net/minecraft/util/math/MathHelper.mapping
index 4914cb82a4..2b88a72b65 100644
--- a/mappings/net/minecraft/util/math/MathHelper.mapping
+++ b/mappings/net/minecraft/util/math/MathHelper.mapping
@@ -206,3 +206,8 @@ CLASS net/minecraft/class_3532 net/minecraft/util/math/MathHelper
 		ARG 4 max
 	METHOD method_27285 square (F)F
 		ARG 0 n
+	METHOD method_28139 roundUpToMultiple (II)I
+		COMMENT Returns a value farther than or as far as {@code value} from zero that
+		COMMENT is a multiple of {@code divisor}.
+		ARG 0 value
+		ARG 1 divisor
diff --git a/mappings/net/minecraft/util/math/WordPackedArray.mapping b/mappings/net/minecraft/util/math/WordPackedArray.mapping
new file mode 100644
index 0000000000..3ca1167156
--- /dev/null
+++ b/mappings/net/minecraft/util/math/WordPackedArray.mapping
@@ -0,0 +1,23 @@
+CLASS net/minecraft/class_5298 net/minecraft/util/math/WordPackedArray
+	COMMENT A packed array of integers. Introduced in 20w17a to represent the old
+	COMMENT block state storage format.
+	FIELD field_24641 array [J
+	FIELD field_24642 unitSize I
+	FIELD field_24643 maxValue J
+	FIELD field_24644 length I
+	METHOD <init> (II)V
+		ARG 1 unitSize
+			COMMENT the max number of bits a value can use
+		ARG 2 length
+			COMMENT the length of values
+	METHOD <init> (II[J)V
+		ARG 1 unitSize
+		ARG 2 length
+		ARG 3 array
+	METHOD method_28151 getAlignedArray ()[J
+	METHOD method_28152 get (I)I
+		ARG 1 index
+	METHOD method_28153 set (II)V
+		ARG 1 index
+		ARG 2 value
+	METHOD method_28154 getUnitSize ()I
diff --git a/mappings/net/minecraft/world/BlockCollisionSpliterator.mapping b/mappings/net/minecraft/world/BlockCollisionSpliterator.mapping
new file mode 100644
index 0000000000..587cc7a10b
--- /dev/null
+++ b/mappings/net/minecraft/world/BlockCollisionSpliterator.mapping
@@ -0,0 +1,21 @@
+CLASS net/minecraft/class_5329 net/minecraft/world/BlockCollisionSpliterator
+	FIELD field_25168 entity Lnet/minecraft/class_1297;
+	FIELD field_25169 box Lnet/minecraft/class_238;
+	FIELD field_25170 context Lnet/minecraft/class_3726;
+	FIELD field_25171 blockIterator Lnet/minecraft/class_3980;
+	FIELD field_25172 pos Lnet/minecraft/class_2338$class_2339;
+	FIELD field_25173 boxShape Lnet/minecraft/class_265;
+	FIELD field_25174 world Lnet/minecraft/class_1941;
+	FIELD field_25175 checkEntity Z
+	METHOD <init> (Lnet/minecraft/class_1941;Lnet/minecraft/class_1297;Lnet/minecraft/class_238;)V
+		ARG 1 world
+		ARG 2 entity
+		ARG 3 box
+	METHOD method_29283 getChunk (II)Lnet/minecraft/class_1922;
+		ARG 1 x
+		ARG 2 z
+	METHOD method_29284 isInWorldBorder (Lnet/minecraft/class_2784;Lnet/minecraft/class_238;)Z
+		ARG 0 border
+		ARG 1 box
+	METHOD method_29285 offerEntitylessShape (Ljava/util/function/Consumer;)Z
+	METHOD method_29286 offerEntityShape (Ljava/util/function/Consumer;)Z