I have a Major League Equivalent calculation of Fischer, and ran some MLB player-season comps at Fischer's mean projection age 27 (and also the upper and lower bands of an 80% confidence interval).
For the comps, I use HR Rate, BB Rate, SO Rate, OBP, SLG, Speed Score split into two components, and handedness, and an age factor.
Comparable seasons at my mean MLE projection for him at age 27 included Will Myers 2019, our own Jake Bauers 2023, Steven Souza 2015 and Patrick Wisdom 2022. None of those are particularly good seasons, but they aren't terrible (think 720-ish OPS). The strikeouts are big problem.
His upside at the 80% confidence level (age 27) produced the likes of Bryan LaHair 2012, Domingo Santana 2019, Ryan McMahon 2019, Ian Happ 2021, and Jamie Outman 2023. The names are not exciting, but those are some decent seasons (think 775-ish OPS).
Also in the range of encouraging outcomes are seasons from Justin Upton, William Contreras and Brandon Lowe. At the low band, seasons from Michael Toglia, Oswaldo Arcia, Joey Bart, Michael Toglia and Christopher Morel (think 645 OPS).
*The comps are hitting only. They do not take position into account.