"Different sea level reconstructions show a spread in sea level rise over the last six decades and it is not yet certain whether the sum of contributors explains the reconstructed rise. Possible causes for this spread are, among others, vertical land motion at tide-gauge locations and the sparse sampling of the spatially variable ocean. To assess these open questions, reconstructed sea level and the role of the contributors are investigated on a local, basin, and global scale. High-latitude seas are excluded. Tide-gauge records are combined with observations of vertical land motion, independent estimates of ice-mass loss, terrestrial water storage, and barotropic atmospheric forcing in a self-consistent framework to reconstruct sea level changes on basin and global scales, which are compared to the estimated sum of contributing processes. For the first time, it is shown that for most basins the reconstructed sea level trend and acceleration can be explained by the sum of contributors, as well as a large part of the decadal variability. The sparsely sampled South Atlantic Ocean forms an exception. The global-mean sea level reconstruction shows a trend of 1.5 ± 0.2 mm yr−1 over 1958–2014 (1σ), compared to 1.3 ± 0.1 mm yr−1 for the sum of contributors. Over the same period, the reconstruction shows a positive acceleration of 0.07 ± 0.02 mm yr−2, which is also in agreement with the sum of contributors, which shows an acceleration of 0.07 ± 0.01 mm yr−2. Since 1993, both reconstructed sea level and the sum of contributors show good agreement with altimetry estimates."

https://journals.ametsoc.org/view/journals/clim/31/3/jcli-d-17-0502.1.xml

A Consistent Sea-Level Reconstruction and Its Budget on Basin and Global Scales over 1958–2014

Thomas Frederikse et al 2018

No acceleration.

"Our GMSL estimate (Fig. 1a) shows a trend of 1.56 ± 0.33 mm yr−1 (90% confidence interval) over 1900–2018. It is also characterized by sub-stantial multidecadal variability, with higher rates of sea-level rise during the 1940s and since the 1990s, and lower rates around 1920 and 1970. The higher rates at the turn of the millennium are in good agreement with independent satellite-altimetry observations34. The observed trend over 1900–2018 is consistent with the sum of the esti-mated thermal expansion and changes in ocean mass, which sum to 1.52 ± 0.33 mm yr−1 (90% confidence interval). This consistency holds not only for the trends over the full study period, but also over the past 50 years (Table 1), and for the pattern of multidecadal variability (Fig. 1c), except for the low rates of sea-level change around the 1920s and early 1930s."

"The causes of sea-level rise since 1900"

Thomas Frederikse et al 2020

https://www.nature.com/articles/s41586-020-2591-3

or

https://sci-hub.st/10.1038/s41586-020-2591-3

So still no acceleration.

Edit: Although they do say that "good agreement with independent satellite-altimetry observations". Which of course they were saying was 3mm/year.