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We present a detailed study of the nuclear star clusters (NSCs) and massiveblack holes (BHs) of four of the nearest low-mass early-type galaxies: M32,NGC205, NGC5012, and NGC5206. We measure dynamical masses of both the BHs andNSCs in these galaxies using Gemini/NIFS or VLT/SINFONI stellar kinematics,Hubble Space Telescope (HST) imaging, and Jeans Anisotropic Models. We detectmassive BHs in M32, NGC5102, and NGC5206, while in NGC205, we find only anupper limit. These BH mass estimates are consistent with previous measurementsin M32 and NGC205, while those in NGC5102 and NGC5206 are estimated for thefirst time, and both found to be $<$$10^6~M_{\odot}$. This adds to just ahandful of galaxies with dynamically measured sub-million $M_{\odot}$ centralBHs. Combining these BH detections with our recent work on NGC404's BH, we findthat 80\% (4/5) of nearby, low-mass ($10^9-10^{10}~M_{\odot}$;$\sigma_{\star}\sim20-70$ km/s) early-type galaxies host BHs. Such a highoccupation fraction suggests the BH seeds formed in the early epoch of cosmicassembly likely resulted in abundant seeds, favoring a low-mass seed mechanismof the remnants, most likely from the first generation of massive stars. Wefind dynamical masses of the NSCs ranging from $2-80\times10^6~M_{\odot}$ andcompare these masses to scaling relations for NSCs based primarily onphotometric mass estimates. Color gradients suggest younger stellar populationslie at the centers of the NSCs in three of the four galaxies (NGC205, NGC5102,and NGC5206), while the morphology of two are complex and are best-fit withmultiple morphological components (NGC5102 and NGC5206). The NSC kinematicsshow they are rotating, especially in M32 and NGC5102($V/\sigma_{\star}\sim0.7$).

Nearby Early-Type Galactic Nuclei at High Resolution: Dynamical Black Hole and Nuclear Star Cluster Mass Measurements