Although not exhaustive & hopefully other members will update the list...
+ Sofija, Mila, Mika, Valerija, Gundega...

(In the future I suspect some dealers may move to Spanish tables. So if any members want to get asking their favourite dealers if they are learning Spanish & post the names ..... it would help with compiling a possible Spanish speaking tables list)
This have nothing to do with the Playtech floor. These games in Spanish will be situated in the Evolution floor. So if some Dealer on the Playtech floor is saying, that she/he learns Spanish at the moment - it is just a coincidence. I swear.