does anyone know

I don't know about those particular sororities, but I know a lot of girls that rushed as juniors last year that made it into a lot of really great houses so I'm sure you'll be fine

Best wishes, I bet you will be fine! From Panhell FAQ:

"I am going through recruitment as an upperclassman and have heard that this will put me at a disadvantage, is this true?
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UF Panhellenic has implemented a selection process that gives sophomores, juniors and seniors a fair opportunity at Recruitment. The selection process is called Upperclassman Quota. Basically, you go through Recruitment as usual, but when you preference your chapters after each round you do not compete with freshman because there are two separate pools (upperclassmen and freshman.) This system makes the process much more fair, and you do not have to worry about being at a disadvantage because of your classification."

I am in one of the sororities you listed and we have extended bids to juniors and even a senior once. :) And I know quite a few women that rushed as juniors in the other chapters you listed. Don't stress, please. No, they won't only extend bids to sophomores, we 100% prefer a normal junior to a weird sophomore (and they exist) so as long as you keep your mind open and just be yourself you will be fine.

Some of my favorite girls to rush were juniors. My glittle rushed as one and I love her to pieces. I rushed as sophomore. I'm in one of those houses too :)