I agree that a push to form alliances is going to leave a lot of people a little suspicious.
There are, indeed, many feminist groups which anyone can support already, who have a coherent strategy and a track record.
Many, if not most, people have to be incredibly circumspect about this issue. Both with their personal details and identity, and also having what they say open to scrutiny.
Assuming everyone thinks the same as oneself is a mistake.
Understanding that you can find common ground, despite thinking differently about many details, is necessary. But it doesn't immediately lend itself to an alliance.
@RedToothBrush I hope you're okay. Generally, I mean.
You have a fantastic strategy and highly relevant political knowledge. Coupled with personal experience of this it issue. That combination has to be unusual, if not unique.
Your stresses are going to be amplified by conflicts.
You have my support, whatever you decide to do. And gratitude for what you have already done.