You can assess the relevance of each comparable based on the following:

You may wish to consider which public comps are most similar to the target company in terms of qualitative factors such as market overlap, role in the value chain, operational characteristics, and competitive position as well as quantitative factors such as KPI performance, normalized margins, growth rates, and capital structure composition.

Note that the public comps will often be far larger and somewhat slower growing than growth stage private companies, so keep that in mind when making selections.