Bar Chart Race is a free animation tool that runs in your browser with no install. Paste and edit your JSON for each point in time in the Data panel, and the top bars smoothly grow, shrink, and swap ranks. Rework the whole look from the JSON in the Style panel, and change the value label's color, prefix, suffix, decimals, and thousands separator on the spot from the Value Label panel.
Load images into the Album panel and map them to your series through images in the data, and each bar carries its own icon. The Playback panel plays, pauses, and scrubs, and the Canvas panel picks the output size and the preview scale. Export the finished animation as a video from the Export panel. Drag any panel by its header to move it anywhere, and resize it from the corners and edges.