diff --git a/tools_webrtc/mb/mb_config.pyl b/tools_webrtc/mb/mb_config.pyl
index f5227c02a4..93cac0d209 100644
--- a/tools_webrtc/mb/mb_config.pyl
+++ b/tools_webrtc/mb/mb_config.pyl
@@ -50,6 +50,18 @@
       'Linux UBSan': 'ubsan_clang_release_bot_x64',
       'Linux UBSan vptr': 'ubsan_vptr_clang_release_bot_x64',
       'Linux64 Release (Libfuzzer)': 'libfuzzer_asan_release_bot_x64',
+      # "More configs" bots will build all the following configs in sequence.
+      # This is using MB's "phases" feature.
+      'Linux (more configs)': {
+        'intelligibility_enhancer_no_include_tests':
+          'intelligibility_enhancer_no_include_tests_x64',
+        'bwe_test_logging':
+          'bwe_test_logging_x64',
+        'dummy_audio_file_devices_no_protobuf':
+          'dummy_audio_file_devices_no_protobuf_x64',
+        'rtti_no_sctp':
+          'rtti_no_sctp_x64',
+      },
 
       # Android
       'Android32 (M Nexus5X)': 'android_release_bot_arm',
@@ -59,6 +71,16 @@
       'Android32 Builder x86': 'android_release_bot_x86',
       'Android32 Builder x86 (dbg)': 'android_debug_static_bot_x86',
       'Android64 Builder x64 (dbg)': 'android_debug_static_bot_x64',
+      'Android32 (more configs)': {
+        'intelligibility_enhancer_no_include_tests':
+          'intelligibility_enhancer_no_include_tests_android_arm',
+        'bwe_test_logging':
+          'bwe_test_logging_android_arm',
+        'dummy_audio_file_devices_no_protobuf':
+          'dummy_audio_file_devices_no_protobuf_android_arm',
+        'rtti_no_sctp':
+          'rtti_no_sctp_android_arm',
+      },
 
       # Windows
       'Win32 Debug': 'win_msvc_debug_bot_x86',
@@ -70,6 +92,16 @@
       'Win64 Debug (Clang)': 'win_clang_debug_bot_x64',
       'Win64 Release (Clang)': 'win_clang_release_bot_x64',
       'Win32 ASan': 'win_asan_clang_release_bot_x86',
+      'Win (more configs)': {
+        'intelligibility_enhancer_no_include_tests':
+          'intelligibility_enhancer_no_include_tests_x86',
+        'bwe_test_logging':
+          'bwe_test_logging_x86',
+        'dummy_audio_file_devices_no_protobuf':
+          'dummy_audio_file_devices_no_protobuf_x86',
+        'rtti_no_sctp':
+          'rtti_no_sctp_x86',
+      },
     },
     'client.webrtc.branches': {
       # iOS
@@ -173,6 +205,16 @@
       'linux_ubsan_vptr': 'ubsan_vptr_clang_release_bot_x64',
       'linux_experimental': 'release_bot_x64',
       'linux_libfuzzer_rel': 'libfuzzer_asan_release_bot_x64',
+      'linux_more_configs': {
+        'intelligibility_enhancer_no_include_tests':
+          'intelligibility_enhancer_no_include_tests_x64',
+        'bwe_test_logging':
+          'bwe_test_logging_x64',
+        'dummy_audio_file_devices_no_protobuf':
+          'dummy_audio_file_devices_no_protobuf_x64',
+        'rtti_no_sctp':
+          'rtti_no_sctp_x64',
+      },
 
       # Android
       'android_compile_dbg': 'android_debug_static_bot_arm',
@@ -187,6 +229,16 @@
       'android_rel': 'android_release_bot_arm',
       'android_arm64_rel': 'android_release_bot_arm64',
       'android_experimental': 'android_release_bot_arm',
+      'android_more_configs': {
+        'intelligibility_enhancer_no_include_tests':
+          'intelligibility_enhancer_no_include_tests_android_arm',
+        'bwe_test_logging':
+          'bwe_test_logging_android_arm',
+        'dummy_audio_file_devices_no_protobuf':
+          'dummy_audio_file_devices_no_protobuf_android_arm',
+        'rtti_no_sctp':
+          'rtti_no_sctp_android_arm',
+      },
 
       # Windows
       'win_compile_dbg': 'debug_bot_x86',
@@ -205,6 +257,16 @@
       'win_experimental': 'release_bot_x86',
       'win_x64_win8': 'debug_bot_x64',
       'win_x64_win10': 'debug_bot_x64',
+      'win_more_configs': {
+        'intelligibility_enhancer_no_include_tests':
+          'intelligibility_enhancer_no_include_tests_x86',
+        'bwe_test_logging':
+          'bwe_test_logging_x86',
+        'dummy_audio_file_devices_no_protobuf':
+          'dummy_audio_file_devices_no_protobuf_x86',
+        'rtti_no_sctp':
+          'rtti_no_sctp_x86',
+      },
     }
   },
 
@@ -355,6 +417,48 @@
       'android', 'gn', 'release', 'goma', 'arm64'
     ],
 
+    # More configs
+    'intelligibility_enhancer_no_include_tests_x64': [
+      'debug_bot', 'x64', 'intelligibility_enhancer', 'no_include_tests'
+    ],
+    'bwe_test_logging_x64': [
+      'debug_bot', 'x64', 'bwe_test_logging'
+    ],
+    'dummy_audio_file_devices_no_protobuf_x64': [
+      'debug_bot', 'x64', 'dummy_audio_file_devices', 'no_protobuf'
+    ],
+    'rtti_no_sctp_x64': [
+      'debug_bot', 'x64', 'rtti', 'no_sctp'
+    ],
+
+    'intelligibility_enhancer_no_include_tests_x86': [
+      'debug_bot', 'x86', 'intelligibility_enhancer', 'no_include_tests'
+    ],
+    'bwe_test_logging_x86': [
+      'debug_bot', 'x86', 'bwe_test_logging'
+    ],
+    'dummy_audio_file_devices_no_protobuf_x86': [
+      'debug_bot', 'x86', 'dummy_audio_file_devices', 'no_protobuf'
+    ],
+    'rtti_no_sctp_x86': [
+      'debug_bot', 'x86', 'rtti', 'no_sctp'
+    ],
+
+    'intelligibility_enhancer_no_include_tests_android_arm': [
+      'android', 'debug_static_bot', 'arm',
+      'intelligibility_enhancer', 'no_include_tests'
+    ],
+    'bwe_test_logging_android_arm': [
+      'android', 'debug_static_bot', 'arm', 'bwe_test_logging'
+    ],
+    'dummy_audio_file_devices_no_protobuf_android_arm': [
+      'android', 'debug_static_bot', 'arm',
+      'dummy_audio_file_devices', 'no_protobuf'
+    ],
+    'rtti_no_sctp_android_arm': [
+      'android', 'debug_static_bot', 'arm', 'rtti', 'no_sctp'
+    ],
+
     # This is used for tracking purposes; any bot that uses this config
     # should never actually run MB.
     'none': [
@@ -512,6 +616,34 @@
 
     'use_default_libcxx': {
       'gn_args': 'use_custom_libcxx=false',
-    }
+    },
+
+    'intelligibility_enhancer': {
+      'gn_args': 'rtc_enable_intelligibility_enhancer=true',
+    },
+
+    'no_include_tests': {
+      'gn_args': 'rtc_include_tests=false',
+    },
+
+    'bwe_test_logging': {
+      'gn_args': 'rtc_enable_bwe_test_logging=true',
+    },
+
+    'dummy_audio_file_devices': {
+      'gn_args': 'rtc_use_dummy_audio_file_devices=true',
+    },
+
+    'no_protobuf': {
+      'gn_args': 'rtc_enable_protobuf=false',
+    },
+
+    'rtti': {
+      'gn_args': 'use_rtti=true',
+    },
+
+    'no_sctp': {
+      'gn_args': 'rtc_enable_sctp=false',
+    },
   },
 }