diff --git a/src/app/credExplorer/App.js b/src/app/credExplorer/App.js
index 2cfe9c8..5b75140 100644
--- a/src/app/credExplorer/App.js
+++ b/src/app/credExplorer/App.js
@@ -9,6 +9,7 @@ import BrowserLocalStore from "../browserLocalStore";
 import {PagerankTable} from "./pagerankTable/Table";
 import {WeightConfig} from "./WeightConfig";
 import RepositorySelect from "./RepositorySelect";
+import {_Prefix as GithubPrefix} from "../../plugins/github/nodes";
 import {
   createStateTransitionMachine,
   type AppState,
@@ -71,6 +72,7 @@ export function createApp(
         const pnd = appState.substate.pagerankNodeDecomposition;
         pagerankTable = (
           <PagerankTable
+            defaultNodeFilter={GithubPrefix.userlike}
             adapters={adapters}
             pnd={pnd}
             maxEntriesPerList={100}
diff --git a/src/app/credExplorer/pagerankTable/Table.js b/src/app/credExplorer/pagerankTable/Table.js
index 3a40622..d7caab3 100644
--- a/src/app/credExplorer/pagerankTable/Table.js
+++ b/src/app/credExplorer/pagerankTable/Table.js
@@ -2,6 +2,7 @@
 
 import React from "react";
 import sortBy from "lodash.sortby";
+import * as NullUtil from "../../../util/null";
 
 import {type NodeAddressT, NodeAddress} from "../../../core/graph";
 import type {PagerankNodeDecomposition} from "../../../core/attribution/pagerankNodeDecomposition";
@@ -15,15 +16,29 @@ type PagerankTableProps = {|
   +pnd: PagerankNodeDecomposition,
   +adapters: DynamicAdapterSet,
   +maxEntriesPerList: number,
+  +defaultNodeFilter: ?NodeAddressT,
 |};
 type PagerankTableState = {|topLevelFilter: NodeAddressT|};
 export class PagerankTable extends React.PureComponent<
   PagerankTableProps,
   PagerankTableState
 > {
-  constructor() {
+  constructor(props: PagerankTableProps): void {
     super();
-    this.state = {topLevelFilter: NodeAddress.empty};
+    const {defaultNodeFilter, adapters} = props;
+    if (defaultNodeFilter != null) {
+      const nodeTypes = adapters.static().nodeTypes();
+      if (!nodeTypes.some((x) => x.prefix === defaultNodeFilter)) {
+        throw new Error(
+          `invalid defaultNodeFilter ${defaultNodeFilter}: doesn't match any type`
+        );
+      }
+    }
+    const topLevelFilter = NullUtil.orElse(
+      props.defaultNodeFilter,
+      NodeAddress.empty
+    );
+    this.state = {topLevelFilter};
   }
 
   render() {
diff --git a/src/app/credExplorer/pagerankTable/Table.test.js b/src/app/credExplorer/pagerankTable/Table.test.js
index 9251f3d..a6d8f4b 100644
--- a/src/app/credExplorer/pagerankTable/Table.test.js
+++ b/src/app/credExplorer/pagerankTable/Table.test.js
@@ -3,7 +3,7 @@
 import React from "react";
 import {shallow} from "enzyme";
 
-import {NodeAddress} from "../../../core/graph";
+import {NodeAddress, type NodeAddressT} from "../../../core/graph";
 
 import {PagerankTable} from "./Table";
 import {example, COLUMNS} from "./sharedTestUtils";
@@ -24,7 +24,12 @@ describe("app/credExplorer/pagerankTable/Table", () => {
     it("renders thead column order properly", async () => {
       const {pnd, adapters} = await example();
       const element = shallow(
-        <PagerankTable pnd={pnd} adapters={adapters} maxEntriesPerList={1} />
+        <PagerankTable
+          defaultNodeFilter={null}
+          pnd={pnd}
+          adapters={adapters}
+          maxEntriesPerList={1}
+        />
       );
       const th = element.find("thead th");
       const columnNames = th.map((t) => t.text());
@@ -32,10 +37,15 @@ describe("app/credExplorer/pagerankTable/Table", () => {
     });
 
     describe("has a filter select", () => {
-      async function setup() {
+      async function setup(defaultNodeFilter?: NodeAddressT) {
         const {pnd, adapters} = await example();
         const element = shallow(
-          <PagerankTable pnd={pnd} adapters={adapters} maxEntriesPerList={1} />
+          <PagerankTable
+            defaultNodeFilter={defaultNodeFilter}
+            pnd={pnd}
+            adapters={adapters}
+            maxEntriesPerList={1}
+          />
         );
         const label = element.find("label");
         const options = label.find("option");
@@ -74,6 +84,21 @@ describe("app/credExplorer/pagerankTable/Table", () => {
         );
         expect(actualNodes).not.toHaveLength(0);
       });
+      it("filter defaults to show all if defaultNodeFilter not passed", async () => {
+        const {element} = await setup();
+        expect(element.state().topLevelFilter).toEqual(NodeAddress.empty);
+      });
+      it("filter defaults to defaultNodeFilter if available", async () => {
+        const filter = NodeAddress.fromParts(["foo", "a"]);
+        const {element} = await setup(filter);
+        expect(element.state().topLevelFilter).toEqual(filter);
+      });
+      it("raises an error if defaultNodeFilter doesn't match any node type", async () => {
+        const badFilter = NodeAddress.fromParts(["doesn't", "exist"]);
+        await expect(setup(badFilter)).rejects.toThrow(
+          "invalid defaultNodeFilter"
+        );
+      });
     });
 
     describe("creates a NodeRowList", () => {
@@ -82,6 +107,7 @@ describe("app/credExplorer/pagerankTable/Table", () => {
         const maxEntriesPerList = 1;
         const element = shallow(
           <PagerankTable
+            defaultNodeFilter={null}
             pnd={pnd}
             adapters={adapters}
             maxEntriesPerList={maxEntriesPerList}