This paper presents a cosmological analysis of the combination of weak lensing data from the Dark Energy Survey Year 3 (DES-Y3), Kilo-Degree Survey (KiDS-1000), and Hyper Suprime-Cam Subaru Strategic Program (HSC-DR1) surveys. The analysis is performed using a joint harmonic-space pipeline that reaches significantly smaller scales ($\ell_{\text{max}} = 4500$) compared to previous studies, corresponding to angular scales of $\delta\theta \sim 2.4'$. The authors use the Baccoemu emulator to accurately model non-linearities and baryonic effects, which are crucial for understanding the cosmic shear data. The main findings include: 1. **Cosmological Constraints**: The analysis yields a value of $S_8 \equiv \sigma_8 \sqrt{\Omega_m / 0.3} = 0.795^{+0.015}_{-0.017}$, which is in relatively good agreement with the *Planck* CMB constraints, although it is in tension with *Planck* at the $\sim 3\sigma$ level for the matter density parameter $\Omega_m$. 2. **Baryonic Effects**: The impact of baryonic effects on the cosmic shear data is studied, showing that failing to model and marginalize over them on scales $\ell \lesssim 2000$ does not significantly affect the posterior constraints for DES-Y3 and KiDS-1000, but has a mild effect on deeper samples like HSC-DR1. 3. **Tensions**: The tension between the cosmic shear data and *Planck* constraints on $H_0$ and $S_8$ is discussed, and it is shown that this tension can be reduced by including a prior on the distance-redshift relationship from BAO data. 4. **Modeling and Analysis Choices**: The robustness of the results to various analysis choices, such as scale cuts, baryonic parameter fixing, and cosmological parameter fixing, is carefully examined. The paper concludes with a summary of the main results and a discussion of potential future avenues for further investigation, emphasizing the importance of combining multiple weak lensing surveys to better understand the cosmological tensions and the role of baryonic effects.This paper presents a cosmological analysis of the combination of weak lensing data from the Dark Energy Survey Year 3 (DES-Y3), Kilo-Degree Survey (KiDS-1000), and Hyper Suprime-Cam Subaru Strategic Program (HSC-DR1) surveys. The analysis is performed using a joint harmonic-space pipeline that reaches significantly smaller scales ($\ell_{\text{max}} = 4500$) compared to previous studies, corresponding to angular scales of $\delta\theta \sim 2.4'$. The authors use the Baccoemu emulator to accurately model non-linearities and baryonic effects, which are crucial for understanding the cosmic shear data. The main findings include: 1. **Cosmological Constraints**: The analysis yields a value of $S_8 \equiv \sigma_8 \sqrt{\Omega_m / 0.3} = 0.795^{+0.015}_{-0.017}$, which is in relatively good agreement with the *Planck* CMB constraints, although it is in tension with *Planck* at the $\sim 3\sigma$ level for the matter density parameter $\Omega_m$. 2. **Baryonic Effects**: The impact of baryonic effects on the cosmic shear data is studied, showing that failing to model and marginalize over them on scales $\ell \lesssim 2000$ does not significantly affect the posterior constraints for DES-Y3 and KiDS-1000, but has a mild effect on deeper samples like HSC-DR1. 3. **Tensions**: The tension between the cosmic shear data and *Planck* constraints on $H_0$ and $S_8$ is discussed, and it is shown that this tension can be reduced by including a prior on the distance-redshift relationship from BAO data. 4. **Modeling and Analysis Choices**: The robustness of the results to various analysis choices, such as scale cuts, baryonic parameter fixing, and cosmological parameter fixing, is carefully examined. The paper concludes with a summary of the main results and a discussion of potential future avenues for further investigation, emphasizing the importance of combining multiple weak lensing surveys to better understand the cosmological tensions and the role of baryonic effects.