diff --git a/src/platform/packages/shared/kbn-esql-ast/src/commands/registry/join/utils.ts b/src/platform/packages/shared/kbn-esql-ast/src/commands/registry/join/utils.ts
index fae128b4336eb..37ead28a2cecf 100644
--- a/src/platform/packages/shared/kbn-esql-ast/src/commands/registry/join/utils.ts
+++ b/src/platform/packages/shared/kbn-esql-ast/src/commands/registry/join/utils.ts
@@ -24,6 +24,7 @@ import type {
 import type { ICommand } from '../registry';
 import type { GetColumnsByTypeFn, ICommandContext, ISuggestionItem } from '../types';
 import type { JoinCommandPosition, JoinStaticPosition } from './types';
+import { SuggestionCategory } from '../../../shared/sorting/types';
 
 const REGEX =
   /^(?<type>\w+((?<after_type>\s+((?<mnemonic>(JOIN|JOI|JO|J)((?<after_mnemonic>\s+((?<index>\S+((?<after_index>\s+(?<as>(AS|A))?(?<after_as>\s+(((?<alias>\S+)?(?<after_alias>\s+)?)?))?((?<on>(ON|O))?))?))?))?))?))?))?/i;
@@ -191,6 +192,7 @@ export const markCommonFields = (
         ...suggestion,
         sortText: '1-' + (suggestion.sortText || suggestion.label),
         detail,
+        category: SuggestionCategory.LOOKUP_COMMON_FIELD,
         documentation: {
           value: i18n.translate('kbn-esql-ast.esql.autocomplete.join.sharedField', {
             defaultMessage: 'Field shared between the source and the lookup index',
diff --git a/src/platform/packages/shared/kbn-esql-ast/src/shared/sorting/priority_provider.ts b/src/platform/packages/shared/kbn-esql-ast/src/shared/sorting/priority_provider.ts
index 269c370109fc5..0ab1fa6fa820f 100644
--- a/src/platform/packages/shared/kbn-esql-ast/src/shared/sorting/priority_provider.ts
+++ b/src/platform/packages/shared/kbn-esql-ast/src/shared/sorting/priority_provider.ts
@@ -27,6 +27,7 @@ const CATEGORY_PRIORITIES: Record<SuggestionCategory, number> = {
 
   [SuggestionCategory.USER_DEFINED_COLUMN]: 300,
   [SuggestionCategory.RECOMMENDED_FIELD]: 310,
+  [SuggestionCategory.LOOKUP_COMMON_FIELD]: 315,
   [SuggestionCategory.ECS_FIELD]: 330,
   [SuggestionCategory.TIME_FIELD]: 350,
   [SuggestionCategory.FIELD]: 350,
diff --git a/src/platform/packages/shared/kbn-esql-ast/src/shared/sorting/suggestion_ordering_engine.test.ts b/src/platform/packages/shared/kbn-esql-ast/src/shared/sorting/suggestion_ordering_engine.test.ts
index 06b815cac3cfb..47272e27cfd27 100644
--- a/src/platform/packages/shared/kbn-esql-ast/src/shared/sorting/suggestion_ordering_engine.test.ts
+++ b/src/platform/packages/shared/kbn-esql-ast/src/shared/sorting/suggestion_ordering_engine.test.ts
@@ -84,4 +84,20 @@ describe('SuggestionOrderingEngine', () => {
     expect(statsResult[1].label).toBe('count');
     expect(statsResult[2].label).toBe('abs');
   });
+
+  it('should sort LOOKUP_COMMON_FIELD first, then FIELD alphabetically', () => {
+    const suggestions = [
+      createSuggestion('sourceField', SuggestionCategory.FIELD),
+      createSuggestion('lookupOnlyField', SuggestionCategory.FIELD),
+      createSuggestion('commonField', SuggestionCategory.LOOKUP_COMMON_FIELD),
+      createSuggestion('anotherSourceField', SuggestionCategory.FIELD),
+    ];
+
+    const result = engine.sort(suggestions, { command: 'JOIN' });
+
+    expect(result[0].label).toBe('commonField');
+    expect(result[1].label).toBe('anotherSourceField');
+    expect(result[2].label).toBe('lookupOnlyField');
+    expect(result[3].label).toBe('sourceField');
+  });
 });
diff --git a/src/platform/packages/shared/kbn-esql-ast/src/shared/sorting/types.ts b/src/platform/packages/shared/kbn-esql-ast/src/shared/sorting/types.ts
index 80da9cbb83c6d..e2933bfb21d80 100644
--- a/src/platform/packages/shared/kbn-esql-ast/src/shared/sorting/types.ts
+++ b/src/platform/packages/shared/kbn-esql-ast/src/shared/sorting/types.ts
@@ -14,6 +14,7 @@ export enum SuggestionCategory {
   USER_DEFINED_COLUMN = 'user_defined_column',
   TIME_PARAM = 'time_param',
   RECOMMENDED_FIELD = 'recommended_field',
+  LOOKUP_COMMON_FIELD = 'lookup_common_field',
   ECS_FIELD = 'ecs_field',
   TIME_FIELD = 'time_field',
   FIELD = 'field',