diff --git a/ui-react/src/graphql/__tests__/model-tree-type-filter.test.ts b/ui-react/src/graphql/__tests__/model-tree-type-filter.test.ts
new file mode 100644
index 0000000..2a75b19
--- /dev/null
+++ b/ui-react/src/graphql/__tests__/model-tree-type-filter.test.ts
@@ -0,0 +1,52 @@
+import { describe, it, expect } from 'vitest';
+import { print, type DocumentNode } from 'graphql';
+import { GetModelTreeDocument, GetModelFamiliesDocument } from '@/graphql/generated/graphql';
+import { GetModelTreeWithRegionsDocument } from '@/graphql/generated/modeling';
+
+/**
+ * Regression guard for #98.
+ *
+ * `modelcatalog_software.type` classifies a model — Empirical, Coupled,
+ * Theory-Guided, and so on. It does not say whether a row is a model. Every row
+ * the ETL migrated matched `?id a sdm:Model` in the RDF, and the column holds
+ * the most specific subtype found; rows written through the REST API's generic
+ * `softwares` resource carry the ontology superclass `sd#Software`. So any
+ * predicate on `type` hides real, runnable models.
+ *
+ * Against TACC's catalog the old `type: { _eq: "sdm#Model" }` predicate reduced
+ * the model tree to 18 of 175 leaf configurations, and to 0 of the 61 that have
+ * every required input annotated in CKAN.
+ *
+ * An allowlist of "model" subtypes is not the fix either. `model-catalog-api`
+ * keeps one (`getSoftwareTypeFilter` in `service.ts`) and it is already stale —
+ * it returns 44 of TACC's 55 software rows, silently dropping three subtypes it
+ * was never taught plus every `sd#Software` row.
+ */
+
+const DOCUMENTS: Array<[string, DocumentNode]> = [
+  ['GetModelTree', GetModelTreeDocument],
+  ['GetModelFamilies', GetModelFamiliesDocument],
+  ['GetModelTreeWithRegions', GetModelTreeWithRegionsDocument],
+];
+
+describe('model-tree queries do not filter software by ontology type', () => {
+  it.each(DOCUMENTS)('%s selects modelcatalog_software', (_name, doc) => {
+    expect(print(doc)).toContain('modelcatalog_software');
+  });
+
+  it.each(DOCUMENTS)('%s carries no type predicate', (_name, doc) => {
+    expect(print(doc)).not.toContain('type:');
+    expect(print(doc)).not.toContain('w3id.org/okn/o/sdm#');
+    expect(print(doc)).not.toContain('w3id.org/okn/o/sd#');
+  });
+
+  it.each(DOCUMENTS)('%s passes modelcatalog_software no where argument', (_name, doc) => {
+    const rootField = doc.definitions
+      .flatMap((def) => (def.kind === 'OperationDefinition' ? def.selectionSet.selections : []))
+      .find((sel) => sel.kind === 'Field' && sel.name.value === 'modelcatalog_software');
+
+    expect(rootField).toBeDefined();
+    const args = rootField && rootField.kind === 'Field' ? (rootField.arguments ?? []) : [];
+    expect(args.map((a) => a.name.value)).toEqual(['order_by']);
+  });
+});
diff --git a/ui-react/src/graphql/generated/graphql.ts b/ui-react/src/graphql/generated/graphql.ts
index d48f5e3..7f6f1ac 100644
--- a/ui-react/src/graphql/generated/graphql.ts
+++ b/ui-react/src/graphql/generated/graphql.ts
@@ -27659,10 +27659,7 @@ export type UpdateModelParameterMutationResult = Apollo.MutationResult<UpdateMod
 export type UpdateModelParameterMutationOptions = Apollo.BaseMutationOptions<UpdateModelParameterMutation, UpdateModelParameterMutationVariables>;
 export const GetModelTreeDocument = gql`
     query GetModelTree {
-  modelcatalog_software(
-    order_by: {label: asc}
-    where: {type: {_eq: "https://w3id.org/okn/o/sdm#Model"}}
-  ) {
+  modelcatalog_software(order_by: {label: asc}) {
     id
     label
     versions(order_by: {label: asc}) {
@@ -28222,10 +28219,7 @@ export type GetStandardVariablesWithUnitsSuspenseQueryHookResult = ReturnType<ty
 export type GetStandardVariablesWithUnitsQueryResult = Apollo.QueryResult<GetStandardVariablesWithUnitsQuery, GetStandardVariablesWithUnitsQueryVariables>;
 export const GetModelFamiliesDocument = gql`
     query GetModelFamilies {
-  modelcatalog_software(
-    order_by: {label: asc}
-    where: {type: {_eq: "https://w3id.org/okn/o/sdm#Model"}}
-  ) {
+  modelcatalog_software(order_by: {label: asc}) {
     id
     label
     versions(order_by: {label: asc}) {
diff --git a/ui-react/src/graphql/generated/modeling.ts b/ui-react/src/graphql/generated/modeling.ts
index ea6f08f..4e7e1c7 100644
--- a/ui-react/src/graphql/generated/modeling.ts
+++ b/ui-react/src/graphql/generated/modeling.ts
@@ -1389,12 +1389,13 @@ export function extractModelIO(config: ModelIOConfig): ModelIO {
   return { inputs, outputs, producesVariableIds };
 }
 
+// No type predicate — deliberate. `modelcatalog_software.type` classifies a model
+// (Empirical, Coupled, Theory-Guided, ...); it does not say whether a row is a model.
+// Filtering on `sdm#Model` showed the thread wizard 18 of TACC's 175 runnable leaf
+// configurations, and none of the 61 that have data annotated. See #98.
 export const GetModelTreeWithRegionsDocument = gql`
   query GetModelTreeWithRegions {
-    modelcatalog_software(
-      order_by: { label: asc }
-      where: { type: { _eq: "https://w3id.org/okn/o/sdm#Model" } }
-    ) {
+    modelcatalog_software(order_by: { label: asc }) {
       id
       label
       versions(order_by: { label: asc }) {
diff --git a/ui-react/src/graphql/queries/model-catalog.graphql b/ui-react/src/graphql/queries/model-catalog.graphql
index 0fb02e1..8183835 100644
--- a/ui-react/src/graphql/queries/model-catalog.graphql
+++ b/ui-react/src/graphql/queries/model-catalog.graphql
@@ -1,11 +1,13 @@
 #import "../fragments/model-catalog.graphql"
 #import "../fragments/region.graphql"
 
+# No type predicate — deliberate. `modelcatalog_software.type` classifies a model
+# (Empirical, Coupled, Theory-Guided, ...); it does not say whether a row is a model.
+# The ETL only migrated `?id a sdm:Model` and stored the most specific subtype, and
+# rows created through the REST API's generic `softwares` resource carry the
+# superclass `sd#Software`. Filtering on any one value hides real models. See #98.
 query GetModelTree {
-  modelcatalog_software(
-    order_by: { label: asc }
-    where: { type: { _eq: "https://w3id.org/okn/o/sdm#Model" } }
-  ) {
+  modelcatalog_software(order_by: { label: asc }) {
     id
     label
     versions(order_by: { label: asc }) {
@@ -163,11 +165,11 @@ query GetStandardVariablesWithUnits {
   }
 }
 
+# No type predicate — same rule as GetModelTree above (#98). This feeds the
+# "Model Family" picker on registration; filtering it made it impossible to
+# register a new version under any model whose type is a subtype of sdm#Model.
 query GetModelFamilies {
-  modelcatalog_software(
-    order_by: { label: asc }
-    where: { type: { _eq: "https://w3id.org/okn/o/sdm#Model" } }
-  ) {
+  modelcatalog_software(order_by: { label: asc }) {
     id
     label
     versions(order_by: { label: asc }) {