Are bisexuals the most discriminated within the LGBT+ community?

I am a cis lesbian so I gravitate more towards spaces around it. I often see bi women saying that bisexuals are the most discriminated sexual orientation or most discriminated identity within the lgbt+ community.

I am always surprised because I have heard so much bad experiences from the trans lesbians in my life that I always assumed being trans within the community was the roughest.

I know this is not a contest of who suffer the most and it's hard to say but I was curious about what you all thought. English is not my first language so I couldn't find any academic research on the subject beside ones saying racism was the most prevalent discrimination within the community.