1 INTRODUCTION

2 MODELING

2.1 Large-Scale Structure in ΛCDM and $w$CDM

2.2 Primordial Non-Gaussianity and $f_{\mathrm{NL}}$

3 ANALYSIS SETUP

3.1 Galaxy Surveys: The LSST Y10 setup

3.2 Gravitational Wave Samples

3.3 Forecasting Procedure

4 RESULTS

4.1 Λ and $w$CDM

4.2 Primordial Non-Gaussianity and $f_{\mathrm{NL}}$

4.3 Sensitivity of Results to Analysis Choices

5 CONCLUSIONS